Cleanup.
Added input clamping in MADD to fix skinning problems in BGDA.
Added support for scissor testing in OpenGL GS handler.
Disable depth writes when alpha testing is activated for updating colors but not depth when failing on always fail mode.
Moved external dependencies path in a separate file.

git-svn-id: http://svn.purei.org/purei/trunk@1295 b36208d7-6611-0410-8bec-b1987f11c4a2
Fixed crash occurring when Direct3D device isn't available.

git-svn-id: http://svn.purei.org/purei/trunk@1296 b36208d7-6611-0410-8bec-b1987f11c4a2
Fixed compilation after changes in Framework::Win32::CListView.

git-svn-id: http://svn.purei.org/purei/trunk@1297 b36208d7-6611-0410-8bec-b1987f11c4a2
Fixed broken compilation due to changes in Framework.

git-svn-id: http://svn.purei.org/purei/trunk@1298 b36208d7-6611-0410-8bec-b1987f11c4a2
Fixed some more compilation errors.

git-svn-id: http://svn.purei.org/purei/trunk@1304 b36208d7-6611-0410-8bec-b1987f11c4a2
Merge remote-tracking branch 'upstream/master'

Conflicts:
	Source/GSH_OpenGL.cpp
Merge remote-tracking branch 'upstream/master'