[[ Cocoa ]] Updated rules to compile against 10.8 SDK (deploy target still 10.6)
[[ Cocoa ]] Updated code to eliminate calls that are no longer present in the SDK - QuickTime effects currently disabled.
[[ Bug 12681 ]] Tweaks to ensure keypad keys come through correctly to the engine.
Merge branch 'bugfix-12681' into develop
Merge remote-tracking branch 'upstream/develop' into feature-multimedia_all

Conflicts:
	engine/src/desktop-dc.cpp
	engine/src/itransform.cpp
	engine/src/mac-core.mm
	engine/src/mac-snapshot.mm
	engine/src/osxfield.cpp
	engine/src/osxmisc.cpp
	engine/src/osxprinter.cpp