Add JSON.pm to third_party

third_party/JSON/JSON-2.58/Changes

+Revision history for Perl extension JSON.
+
+## JSON version 2.xx #####################################################
+
+From version 1.xx to 2.xx, JSON was totally rewritten.
+
+  * JSON becomes a wrapper to JSON::XS or JSON::PP!
+  * objToJson() and jsonToObj() are obsoleted!
+  * $JSON::* variables are no longer available!
+  * JSON::Parser and JSON::Converter are deleted from the distribution!
+  * JSONRPC* and Apache::JSONRPC are deleted from the distribution!
+     Please check JSON::RPC (supports JSON-RPC protocol v1.1 and 1.0).
+
+##########################################################################
+
+2.58 Thu May 23 09:04:37 2013
+        - support PUREPERL_ONLY install option. (rt#84876)
+           (PERL_ONLY and NO_XS are not yet removed)
+        - stop installing JSON::XS automatically on Perl 5.18
+
+2.57
+        - t/x17_strage_overload.t didn't work correctly.
+
+2.56  Sat Apr  6 09:58:32 2013
+        - fixed t/x17_strage_overload.t (rt#84451 by Ricardo Signes)
+
+2.55
+        - update JSON::BackportPP version
+
+2.54  Fri Apr  5 16:15:08 2013
+        - fixed t/19_incr.t on perl >= 5.17.10 (wyant, rt#84154)
+            pathced by mbeijen and modified with demerphq's patch
+        - Fixed some spelling (by briandfoy)
+        - fixed sppeling (by Perlover)
+        - enhanced documents (Thanks to Justin Hunter and Olof Johansson)
+        - changed backend module loading for overloaded object behavior
+                                                (reported by tokuhirom)
+
+2.53  Sun May 22 16:11:05 2011
+        - made Makefile.PL skipping a installing XS question
+            when set $ENV{PERL_ONLY} or $ENV{NO_XS} (rt#66820)
+
+2.52  Sun May 22 15:05:49 2011
+        - fixed to_json (pointed and patched by mmcleric in rt#68359)
+        - backport JSON::PP 2.27200
+            * fixed incr_parse docodeing string more correctly (rt#68032 by LCONS)
+
+2.51  Tue Mar  8 16:03:34 2011
+        - import JSON::PP 2.27105 as BackportPP
+        - fixed documentations (pointed by Britton Kerin and rt#64738)
+
+2.50  Mon Dec 20 14:56:42 2010
+        [JSON]
+        - stable release
+
+2.49_01  Sat Nov 27 22:03:17 2010
+        [JSON]
+        - JSON::PP is split away JSON distributino for perl 5.14
+        - JSON::backportPP is included in instead.
+
+2.27  Sun Oct 31 20:32:46 2010
+        [JSON::PP]
+        - Some optimizations (gfx)
+        [JSON::PP::5005]
+        - added missing B module varibales (makamaka)
+
+2.26  Tue Sep 28 17:41:37 2010
+        [JSON::PP]
+        - cleaned up code and enhanced sort option efficiency in encode.
+
+2.25  Tue Sep 28 16:47:08 2010
+        [JSON]
+        - JSON::Backend::XS::Supportable always executed a needless process
+            with JSON::XS backend. This made encode/decode a bit slower.
+
+2.24  Mon Sep 27 10:56:24 2010
+        [JSON::PP]
+        - tweaked code.
+        - optimized code in hash object encoding.
+
+2.23  Sun Sep 26 22:08:12 2010
+        [JSON::PP]
+        - modified tied object handling in encode. it made encoding speed faster.
+            pointed by https://rt.cpan.org/Ticket/Display.html?id=61604
+        - modified t/e10_bignum.t
+            for avoiding a warning in using Math::BigInt dev version
+
+2.22  Wed Aug 25 12:46:13 2010
+        [JSON]
+        - added JSON::XS installing feature in Makefile.PL
+            with cpan or cpanm (some points suggested by gfx)
+        - check that to_json and from_json are not called as methods (CHORNY)
+        [JSON::PP]
+        - modified for -Duse64bitall -Duselongdouble compiled perl.
+            11_pc_expo.t too. (these are patched by H.Merijn Brand)
+
+2.21  Mon Apr  5 14:56:52 2010
+        [JSON]
+        - enhanced 'HOW DO I DECODE A DATA FROM OUTER AND ENCODE TO OUTER'
+        - renamed eg/bench_pp_xs.pl to eg/bench_decode.pl
+        - added eg/bench_encode.pl
+
+2.20  Fri Apr  2 12:50:08 2010
+        [JSON]
+        - added eg/bench_pp_xs.pl for benchmark sample
+        - updated 'INCREMENTAL PARSING' section
+        [JSON::PP]
+        - decode_prefix() didn't count a consumed text length properly.
+        - enhanced XS compatibilty
+            in the case of decoding a white space garbaged text.
+
+2.19  Tue Mar 30 13:40:24 2010
+        [JSON]
+        - fixed typo (rt#53535 by Angel Abad)
+        - added a recommendation
+              refering to (en|de)code_json to pod (suggested by tokuhirom)
+        - added 'HOW DO I DECODE A DATA FROM OUTER AND ENCODE TO OUTER' to pod.
+
+2.18  Tue Mar 23 15:18:10 2010
+        [JSON]
+        - updated document (compatible with JSON::XS 2.29)
+        [JSON::PP]
+        - fixed encode an overloaded 'eq' object bug (reported by Alexey A. Kiritchun)
+        - enhanced an error message compatible to JSON::XS
+
+2.17  Thu Jan  7 12:23:13 2010
+        [JSON]
+        - fixed a problem caused by JSON::XS backend and support_by_pp option
+          (rt#52842,  rt#52847 by ikegami)
+        [JSON::PP]
+        - made compatible with JSON::XS 2.27
+        - patched decode for incr_parse (rt#52820 by ikegami)
+        - relaxed option caused an infinite loop in some condition.
+
+2.16  Fri Oct 16 15:07:37 2009
+        [JSON][JSON::PP]
+        - made compatible with JSON::XS 2.26
+            *indent adds a final newline
+        - corrected copyrights in JSON::PP58.
+
+2.15  Tue Jun  2 16:36:42 2009
+        [JSON]
+        - made compatible with JSON::XS 2.24
+        - corrected copyrights in some modules.
+        [JSON::PP]
+         - modified incr_parse, pointed by Martin J. Evans (rt#46439)
+         - deleted a meaningless code
+
+2.14  Tue Feb 24 11:20:24 2009
+        [JSON]
+        - the compatible XS version was miswritten in document.
+
+2.13  Sat Feb 21 17:01:05 2009
+        [JSON::PP]
+        - decode() didn't upgrade unicode escaped charcters \u0080-\u00ff.
+          this problem was pointed by rt#43424 (Mika Raento)
+        [JSON::PP::56]
+        - fixed utf8::encode/decode emulators bugs.
+        - defined a missing B module constant in Perl 5.6.0.
+          (reported by Clinton Pierce)
+        [JSON::PP::5005]
+        - _decode_unicode() returned a 0x80-0xff value as UTF8 encoded byte.
+        [JSON]
+        - added a refference to JSON::XS's document "JSON and ECMAscript".
+        - fixed a typo in the document (pointed by Jim Cromie).
+
+2.12  Wed Jul 16 11:14:35 2008
+        [JSON]
+        - made compatible with JSON::XS 2.22
+
+        [JSON::PP]
+        - fixed the incremental parser in negative nest level
+            (pointed and patched by Yuval Kogman)
+
+2.11  Tue Jun 17 14:30:01 2008
+        [JSON::PP]
+        - fixed the decoding process which checks number.
+            regarded number like chars in Unicode (ex. U+FF11) as [\d].
+        - enhanced error messages compatible to JSON::XS.
+
+2.10  Tue Jun  3 18:42:11 2008
+        [JSON]
+        - made compatible with JSON::XS 2.21
+            * updated the document.
+        - added an item pointed by rt#32361 to the doc.
+
+        [JSON::PP] [JSON::PP58] [JSON::PP56] [JSON::PP5005]
+        - made compatible with JSON::XS 2.21
+            * added incr_reset
+        - removed useless codes.
+
+2.09  Sun Apr 20 20:45:33 2008
+        [JSON]
+        - made compatible with JSON::XS 2.2
+        - changed pod section totally.
+
+        [JSON::PP] 2.20001
+        - made compatible witg JSON::XS 2.2
+            * lifted the log2 rounding restriction of max_depth and max_size.
+            * incremental json parsing (EXPERIMENTAL).
+            * allow_unknown/get_allow_unknown methods.
+        - the version format was changed.
+            X.YYZZZ =>  X.YY is the same as JSON::XS. ZZZ is the PP own version.
+        - changed pod section totally.
+
+2.08  Sat Apr 12 22:49:39 2008
+        [JSON]
+        - fixed JSON::Boolean inheritance mechanism.
+            If the backend is XS with support_by_pp mode and using PP only
+            support method, JSON::Boolean did not work correctly.
+            Thanks to hg[at]apteryx's point.
+
+        [JSON::PP] 2.07
+        - Now split into JSON::PP58 for Perl 5.8 and lator.
+        - enhanced an error message compatible to JSON::XS
+            did not croak when TO_JSON method returns same object as passed.
+
+        [JSON::PP58]
+        - modified for Perls post 5.8.0 that don't have utf8::is_utf8.
+            Thanks to Andreas Koenig.
+
+2.07  Sat Feb 16 15:52:29 2008
+        [JSON]
+        - experimentally added -convert_blessed_universally to define
+            UNIVERSAL::TO_JSON subroutine.
+
+              use JSON -convert_blessed_universally;
+              $json->convert_blessed->encode( $blessed );
+
+        - and as_nonbleesed is obsoleted (not yet removed). OK?
+        - fixed t/04_pretty.t.
+
+2.06  Fri Feb  8 16:21:59 2008
+        [JSON::PP] 2.06
+        - enhanced the XS compatibility for pretty-printing
+            and the indent handling was broken!
+
+2.05  Tue Feb  5 13:57:19 2008
+        [JSON::PP] 2.05
+        - enhanced some XS compatibilities for de/encode.
+        - now decode_error can dump high (>127) chars.
+        - enhanced the XS combatilbity of the decoding error.
+        - fixed the utf8 checker while decoding (is_valid_utf8).
+        - implemented utf8::downgrade in JSON::PP56.
+        - enhanced utf8::encode in JSON::PP56.
+        - made utf8::downgrade return a true in JSON::PP5005.
+
+2.04  Sat Jan  5 16:10:01 2008
+        [JSON]
+        - fixed a document typo pointed by kawasaki@annocpan
+        - make DATA handle closed for error mssages in support_by_pp mode.
+        - switched JSON::Backend::XS::Supportable wrapper de/encode
+             to changing symbolic tables for croak messages and speed.
+        - fixed support_by_pp setting
+
+        [JSON::PP] 2.04
+        - enhanced the error message compatiblity to XS.
+
+2.03  Fri Jan  4 14:10:58 2008
+        [JSON]
+        - fixed the description - Transition ways from 1.xx to 2.xx.
+             $JSON::ConvBlessed compat => $json->allow_blessed->as_nonbleesed
+        - support_by_pp supports 'as_nonbleesed' (experimental)
+        - clean up the code for saving memory
+
+        [JSON::PP] 2.03
+        - Now the allo_bignum flag also affects the encoding process.
+            encode() can convert Math::BigInt/Float objects into JSON numbers
+        - added as_nonblessed option (experimental)
+        - cleaned up internal function names (renamed camel case names)
+
+2.02  Wed Dec 26 11:08:19 2007
+        [JSON]
+        - Now support_by_pp allows to use indent_length()
+
+        [JSON::PP] 2.02
+        - added get_indent_length
+
+2.01  Thu Dec 20 11:30:59 2007
+        [JSON]
+        - made the object methods - jsonToObj and objToJson
+          available for a while with warnings.
+
+2.00  Wed Dec 19 11:48:04 2007
+        [JSON]
+        - new version!
+        - modified Makefile.PL for broken Perls (when PERL_DL_NONLAZY = 1).
+
+        [JSON::PP] 2.0104
+        - clean up the document.
+        - use 'subs' instead of CORE::GLOBAL for fixing join() in 5.8.0 - 5.8.2
+        - enhanced decoding error messages for JSON::XS compatibility.
+        - jsonToObj and objToJson warn.
+
+
+1.99_05  Fri Dec 14 18:30:43 2007
+        [JSON]
+        - added a description about the Unicode handling to document.
+
+        [JSON::PP] (2.0103)
+        - Now the JSON::PP56 unicode handling does not require Unicode::String.
+        - Now JSON::PP5005 can de/enocde properly within the Perl 5.005 world.
+        - decode() always utf8::decode()ed to strings.
+        - decode() returned a big integer as string though the integer is
+          smaller than it is so.
+        - a bad know how - added the join() wrapper for Perl 5.8.0 - 5.8.2 bug.
+        - JSON::PP56 encode() did not handle Unicode properly.
+        - added a section about the unicode handling on Perls to JSON::PP doc.
+
+1.99_04  Mon Dec 10 14:28:15 2007
+        [JSON]
+        - modified the tests and source for Perl 5.005
+
+        [JSON::PP] (2.0102)
+        - modified some prototypes in JSON::PP5005.
+
+1.99_03  Mon Dec 10 11:43:02 2007
+        [JSON]
+        - modified tests and document.
+           in Perl5.8.2 or earlier, decoding with utf8 is broken because of
+           a Perl side problem. (join() had a bug.)
+        - modified Makefile.PL for Perl 5.005.
+           in the version, 'require JSON' is fail....
+
+        [JSON::PP] (2.0102)
+        - modified string decode function.
+        - enhanced error messages for compatibility to JSON::XS.
+        - enhanced utf8::decode emulator and unpack emulator in JSON::PP56.
+
+1.99_02  Sun Dec  9 05:06:19 2007
+        [JSON::PP] (2.0101)
+        - decoding with utf8 was broken in Perl 5.10
+            as the behaviour of unpack was changed.
+        - added a fake in JSON::PP5005 (bytes.pm)
+        - added the missing file JONS::PP::Boolean.pm
+
+1.99_01  Sat Dec  8 12:01:43 2007
+        [JSON]
+        - released as version 2.0
+           this module is incompatible to 1.xx, so check the document.
+
+        [JSON::PP] (2.01 from 0.97)
+        - updated JSON::PP for compatible to JSON::XS 2.01
+        - renamed from_json and to_json to decode_json and encode_json
+        - added get_* to JSON::PP
+        - deleted property() from JSON::PP
+        - deleted strict() and added loose()
+        - deleted disable_UTF8() and self_encode()
+        - renamed singlequote to allow_singlequote
+        - renamed allow_bigint to allow_bignum
+        - max_depth and max_size round up their arguments.
+        - added indent_length and sort_by
+
+
+## JSON version 1.xx
+
+1.15  Wed Nov 14 14:52:31 2007
+        - 1.xx final version.
+
+0.09  Sat Apr  9 15:27:47 2005
+        - original version; created by h2xs 1.22 with options
+                -XA -b 5.5.3 -n JSON
+