implementation. cleaned up windows blending code to the point where we
don't really need platform specific blending implementations at all
anymore. added region area return from nsIRegion::GetRects(). unified all
windows bitmap management code under nsDrawingSurfaceWin.cpp.
git-svn-id: svn://10.0.0.236/trunk@21940 18797224-902f-48f8-a5cc-f745e15eee43
drawing surface. WIP on making blender work with arbitrary pixel organizations.
git-svn-id: svn://10.0.0.236/trunk@18510 18797224-902f-48f8-a5cc-f745e15eee43
