[[ Bug 11402 ]] Updated libgraphics to support the updated version of libskia.
[[ Bug 11402 ]] Updated image filtering in libgraphics to use Skia's new levels, improving resizing quality.
[[ Bugfix 11402 ]] Attempt to update thirdparty submodule reference correctly.
[[ Bugfix 11402 ]] Tweaks to get things to compile on OSX.
[[ ImageFilterUpdates ]] Tweaks to get everything compiling on Windows
with new version of libskia.
[[ ImageFilterUpdates ]] Updated libgraphics image filter types to non, low, medium and high.
[[ ImageFilterUpdates ]] Updated engine to use new libgraphics filter types.
[[ ImageFilterUpdates ]] Updated thirdparty submodule reference.
Merge branch 'bugfix-11402' of https://github.com/runrevmichael/livecode into feature-image_filter_update

Conflicts:
	libgraphics/src/w32text.cpp
	thirdparty
[[ ImageFilterUpdate ]] Update OS X builds to compile against the 10.5 SDK using GCC 4.2.
Merge branch 'bugfix-11402' of https://github.com/runrevmichael/livecode into feature-image_filter_update
[[ ImageFilterUpdate ]] Update thirdparty submodule reference.
Merge branch 'feature-image_filter_update' into develop

Conflicts:
	engine/src/w32stack.cpp
	rules/Global Mobile.xcconfig