[WIN32K]

[WIN32K]
- Fix calculation of dest rect in IntSetDIBits
- Rewrite NtGdiStretchDIBitsInternal. It now calls NtGdiSetDIBitsToDeviceInternal in case of SRCCOPY and no stretching and NtGdiCreateDIBitmapInternal + IntEngStretchBlt in the default case. This fixes RLE compressed dibs.
- The code isn't yet perfect, Windows behaviour is pretty complex, especially in regard to topdown/bottomup DIBs and the whole code needs to be rewritten. It will cause one more failed bitmap test, but another one that was formerly only passing with legacy 9x behaviour now behaves correctly.

See issue #5886 for more details.

svn path=/trunk/; revision=51005