update libskia version for graphics refactor
Merge tag '6.0.1' into refactor-graphics

Tagged for 6.0.1 release.
update libskia VC project & disable windows threading to allow building in VC++ 2005
update include paths in libskia Makefile
fix missing include paths in skia build
prevent failed assertion in skia unicode handling
[[ RefactorGraphics ]] fixes to libskia VC project
   change target type of release config to static lib
   change output dirs to global config defaults
[[ RefactorGraphics ]] create iOS project for libskia
[[ RefactorGraphics ]] update android project file for new skia version
[[ RefactorGraphics ]] moved Mark's byte order changes for OSX so colours are current on Android
[[ RefactorGraphics ]] add fallback to hardcoded font list for devices without font configuration file
[[ RefactorGraphics ]] add android port sources to xcode project (for editing)
[[ RefactorGraphics ]] disable skia memory debugging (was causing segmentation faults)
Merge branch 'master' into refactor-graphics
[[ RefactorGraphics ]] [[ libskia ]] Apply ARGB shift definitions to iOS builds
need to include xpath
node content on separate lines
refixed the referencing comments
defined LIBXML_XPTR_ENABLED
updated libxml library to 2.9.1
[[ RevXmlXPath ]] Make sure LIBXML_XPATH_ENABLED is set in xmlversion.h so XPath functions in revXML work.