Telescope Libxml2 changes:

port libxml2 project to x64 platform, refactor code to adapt to 64-bit pointer type
./HTMLparser.c
./HTMLtree.c
./SAX2.c
./buf.c
./c14n.c
./catalog.c
./debugXML.c
./dict.c
./encoding.c
./error.c
./include/buf.h
./include/libxml.h
./include/libxml/HTMLparser.h
./include/libxml/HTMLtree.h
./include/libxml/SAX2.h
./include/libxml/c14n.h
./include/libxml/dict.h
./include/libxml/encoding.h
./include/libxml/nanoftp.h
./include/libxml/nanohttp.h
./include/libxml/parser.h
./include/libxml/parserInternals.h
./include/libxml/tree.h
./include/libxml/uri.h
./include/libxml/xmlIO.h
./include/libxml/xmlmemory.h
./include/libxml/xmlreader.h
./include/libxml/xmlsave.h
./include/libxml/xmlstring.h
./include/libxml/xmlwriter.h
./include/timsort.h
./nanoftp.c
./nanohttp.c
./parser.c
./parserInternals.c
./relaxng.c
./tree.c
./uri.c
./valid.c
./xinclude.c
./xmlIO.c
./xmlcatalog.c
./xmlmemory.c
./xmlreader.c
./xmlregexp.c
./xmlsave.c
./xmlschemas.c
./xmlschemastypes.c
./xmlstring.c
./xmlwriter.c
./xpath.c
./xpointer.c

fix link problem for libxml2
./catalog.c
./xmlIO.c
./include/libxml/xmlversion.h

Fix PS4 Compile errors
./xmlIO.c
./xmlmemory.c

[Telescope] Add a wrapper layer for game engine to pass the third party library functions.
./xmlIO.c


Added files:
./config.h (copied from config.h.in)
./libxml_config.h (for PS4)
./libxml2.vcxproj
./libxml2.vcxproj.filters
./TELESCOPE.CHANGES.txt (this file)
./telescope.libxml2.props