ICU 52 : update gyp and isolate

icu52/README.chromium

 Name: icu
 URL: http://site.icu-project.org/
 Version: 52.1
 License: MIT
 Security Critical: yes
 
 Description:
 This directory contains the source code of ICU 52.1 for C/C++
 
 1. It was obtained with the following:
 
     $ svn export --native-eol LF http://source.icu-project.org/repos/icu/icu/tags/release-52-1 icu52
 
   The following directories we don't use are removed:
 
    - as_is
    - packaging
    - source/layout
    - source/layoutex
 
-2. Platform header files for Linux, FreeBSD, OpenBSD, Android, Mac OS X, and QNX:
+  patches/configure.patch is applied to get runConfigureICU work in the 
+  icudata generation step without layout and layoutex directory by removing the
+  corresponding Makefile's from ac_config variable.
 
-   - Apply platform.patch in patches directory. : It applies the upstream
-     patch to platform.h.in (see http://bugs.icu-project.org/trac/ticket/8248)
-     and change source/common/unicode/ptypes.h to refer to plinux.h and
-     pmac.h generated below.
+2. Apply the following patch for platform related headers (putilimpl.h and 
+   others).
 
-   - 'runConfigureICU Linux', 'runConfigureICU FreeBSD', and
-     'runConfigureICU MacOSX' are run to generate
-     source/common/unicode/platform.h.
-
-   - On OpenBSD, source/common/unicode/platform.h is being generated
-     by the icu4c port in the ports directory and not by runConfigureICU.
-     In case the file has to be updated you can do:
-     cd /home/ports/textproc/icu4c && make configure
-
-   - Rename it to 'plinux.h', 'pfreebsd.h', 'popenbsd.h' and 'pmac.h'
-
-   - Apply patches/pmach.h.patch on Mac to pmac.h
-
-   - On Android, the pandroid.h was generated by copying plinux.h to
-     pandroid.h and applying the patches/pandroid.h.patch.
-
-   - For QNX, the pqnx.h was generated by copying plinux.h to
-     pqnx.h and applying the patches/platform.qnx.patch.
-
-   - For NaCl (icu_nacl.gypi), the pnacl.h was generated by copying plinux.h to
-     pnacl.h and applying the patches/pnacl.h.patch.
-
-   - Apply the CL at https://codereview.chromium.org/15973007/ to plinux.h
-
-3. The following directories were removed because they're not used by Chromium
-   at the moment:
-   as_is
-   packaging
-   source/extra
-   source/sample
-   source/layout
-   source/layoutex
+  - patches/platform.patch for Android and QNX
+    Upstream bug for Android : http://bugs.icu-project.org/trac/ticket/10478
 
 
 4. The word breaking for Chinese and Japanese were modified to use a word
    frequency list with the following patch and cjdict.txt.
 
    - patches/segmentation.patch :
        Adds a dictionary (word-frequency)-based word breaking for CJK
        (Korean is supported in the code, but it does not do anything
         because we don't have a Korean word-list.)
 
@@ skipping 237 matching lines @@
 25. Fix a buffer overflow in UTF-16/32 detection.
     - patches/csetdet.patch
     - upstream bug: http://bugs.icu-project.org/trac/ticket/10318
 
 26. Add BreakIterator::getRuleStatus
     - patches/breakiterator.patch
     - Copy and paste BreakIterator::getRuleStatus API from ICU 52
 
 27. Change export of U_ICUDATA_ENTRY_POINT from U_IMPORT to U_EXPORT.
     - patches/declspec.patch
-
-28. Add support for QNX Neutrino.
-    -  patches/platform.qnx.patch:
-       See #2 about the platform header generation.
-    -  patches/si_value.undef.patch:
-       Work around an all-lowercase macro defined in <signal.h>.
-       Upstream took a different approach:
-       http://bugs.icu-project.org/trac/ticket/9935
-    -  patches/xopen_source.patch:
-       Set _XOPEN_SOURCE to 600 as in the upstream changeset:
-       http://bugs.icu-project.org/trac/changeset/30418