update thirdparty submodule
initial import of refactor-graphics branch
Merge tag '6.0.1' into refactor-graphics
update xcode project files - Mac OS X 10.5 SDK is needed to build libskia
update thirdparty submodule
add libskia include paths to global config
update submodule thirdparty
add libgraphics target to Makefile
add libskia include paths to common.linux.makefile
remove unused lnxcontext sources
update thirdparty submodule
remove old graphics methods from MCUIDC & subclasses
remove references to deleted lnxcontext.h header
fix build on linux - use casts to access old graphics methods of linux MCscreen
implement linux theme drawing refactored from removed lnxcontext.cpp
fix drawing of images & composited elements to custom printer
remove unused MCUIDC::uint4topixmap method
add MCGImageGetRaster function to libgraphics & enable pattern printing to custom printer
fix incorrect drawing of rounded rectangles to custom printer
Merge tag 'tags/6.0.2' into refactor-graphics

Tagged for 6.0.2 release.

Conflicts:
	engine/src/cmdsf.cpp
	thirdparty
remove extraneous call to MCImageBitmapCreateWithOldBitmap
duplicate Mark's "export snapshot" premultiplied alpha fix to "import snapshot"
remove duplicate <SolutionDir>/libgraphics/include entry from global vs props
use #include <uxtheme.h> instead of duplicating structs & definitions in w32theme.cpp
fix player object on Windows - replace offscreenMovie Pixmap with platform-specific MCPlayerOffscreenBuffer m_offscreen
remove unused code within #ifdef OLD_GRAPHICS blocks
fix osx player buffered drawing
remove unused MCContext::copyarea() method