Update libexpat to 2.1.0

third_party/expat/files/README

 
-                        Expat, Release 2.0.1
+                        Expat, Release 2.1.0
 
 This is Expat, a C library for parsing XML, written by James Clark.
 Expat is a stream-oriented XML parser.  This means that you register
 handlers with the parser before starting the parse.  These handlers
 are called when the parser discovers the associated structures in the
 document being parsed.  A start tag is an example of the kind of
 structures for which you may register handlers.
 
 Windows users should use the expat_win32bin package, which includes
 both precompiled libraries and executables, and source code for
 developers.
 
 Expat is free software.  You may copy, distribute, and modify it under
 the terms of the License contained in the file COPYING distributed
 with this package.  This license is the same as the MIT/X Consortium
 license.
 
 Versions of Expat that have an odd minor version (the middle number in
 the release above), are development releases and should be considered
 as beta software.  Releases with even minor version numbers are
 intended to be production grade software.
 
 If you are building Expat from a check-out from the CVS repository,
 you need to run a script that generates the configure script using the
 GNU autoconf and libtool tools.  To do this, you need to have
-autoconf 2.52 or newer and libtool 1.4 or newer (1.5 or newer preferred).
-Run the script like this:
+autoconf 2.58 or newer. Run the script like this:
 
         ./buildconf.sh
 
 Once this has been done, follow the same instructions as for building
 from a source distribution.
 
 To build Expat from a source distribution, you first run the
 configuration shell script in the top level distribution directory:
 
         ./configure
@@ skipping 18 matching lines @@
 and is therefore not recommended for general use - e.g. as part of
 a Linux distribution - but rather for builds with special requirements.
 
 After running the configure script, the "make" command will build
 things and "make install" will install things into their proper
 location.  Have a look at the "Makefile" to learn about additional
 "make" options.  Note that you need to have write permission into
 the directories into which things will be installed.
 
 If you are interested in building Expat to provide document
-information in UTF-16 rather than the default UTF-8, follow these
-instructions (after having run "make distclean"):
+information in UTF-16 encoding rather than the default UTF-8, follow
+these instructions (after having run "make distclean"):
 
         1. For UTF-16 output as unsigned short (and version/error
            strings as char), run:
 
                ./configure CPPFLAGS=-DXML_UNICODE
 
            For UTF-16 output as wchar_t (incl. version/error strings),
            run:
 
                ./configure CFLAGS="-g -O2 -fshort-wchar" \
@@ skipping 19 matching lines @@
 value for DESTDIR, and the rest of the make file using only DESTDIR.
 It works as follows:
    $ make install DESTDIR=/path/to/image
 overrides the in-makefile set DESTDIR, while both
    $ INSTALL_ROOT=/path/to/image make install
    $ make install INSTALL_ROOT=/path/to/image
 use DESTDIR=$(INSTALL_ROOT), even if DESTDIR eventually is defined in the
 environment, because variable-setting priority is
 1) commandline
 2) in-makefile
-3) environment           
+3) environment  
+
+Note: This only applies to the Expat library itself, building UTF-16 versions
+of xmlwf and the tests is currently not supported.         
 
 Note for Solaris users:  The "ar" command is usually located in
 "/usr/ccs/bin", which is not in the default PATH.  You will need to
 add this to your path for the "make" command, and probably also switch
 to GNU make (the "make" found in /usr/ccs/bin does not seem to work
 properly -- appearantly it does not understand .PHONY directives).  If
 you're using ksh or bash, use this command to build:
 
         PATH=/usr/ccs/bin:$PATH make
 
 When using Expat with a project using autoconf for configuration, you
 can use the probing macro in conftools/expat.m4 to determine how to
 include Expat.  See the comments at the top of that file for more
 information.
 
 A reference manual is available in the file doc/reference.html in this
 distribution.
 
 The homepage for this project is http://www.libexpat.org/.  There
 are links there to connect you to the bug reports page.  If you need
 to report a bug when you don't have access to a browser, you may also
 send a bug report by email to expat-bugs@mail.libexpat.org.
 
 Discussion related to the direction of future expat development takes
 place on expat-discuss@mail.libexpat.org.  Archives of this list and
 other Expat-related lists may be found at:
 
         http://mail.libexpat.org/mailman/listinfo/