ddraw: Move the display mode related surface desc fixups from CreateSurface() to ddraw_surface_create_texture().

Cocoa normally maintains the relative position of owned windows with respect
to the owner, which differs from Windows.

winemac: Allow ordering a window into Cocoa's window list even if it's positioned outside of the desktop.

Some programs minimize windows which are outside of the desktop.  The Mac
driver had been leaving such windows ordered out, which prevented them from
minimizing and appearing on the Dock.  That, in turn, made it difficult for
the user to restore them.

gdiplus/tests: Reset the buffer contents before each GdipGetRegionData test and check the tail of the returned data.