[ros-svn] [navaraf] 15830: - Unlock GDI objects by pointer, not by handle.

[navaraf at svn.reactos.com]

- Unlock GDI objects by pointer, not by handle.
- Fix a few invalid lock cases.
- Add support for shared GDI object locks and use it for locking surfaces.



Updated files:
trunk/reactos/include/win32k/bitmaps.h
trunk/reactos/include/win32k/brush.h
trunk/reactos/include/win32k/dc.h
trunk/reactos/include/win32k/gdiobj.h
trunk/reactos/include/win32k/pen.h
trunk/reactos/include/win32k/region.h
trunk/reactos/include/win32k/text.h
trunk/reactos/subsys/win32k/eng/bitblt.c
trunk/reactos/subsys/win32k/eng/misc.c
trunk/reactos/subsys/win32k/eng/surface.c
trunk/reactos/subsys/win32k/eng/window.c
trunk/reactos/subsys/win32k/eng/xlate.c
trunk/reactos/subsys/win32k/include/dce.h
trunk/reactos/subsys/win32k/include/palette.h
trunk/reactos/subsys/win32k/ntddraw/ddraw.c
trunk/reactos/subsys/win32k/ntuser/cursoricon.c
trunk/reactos/subsys/win32k/ntuser/desktop.c
trunk/reactos/subsys/win32k/ntuser/input.c
trunk/reactos/subsys/win32k/ntuser/metric.c
trunk/reactos/subsys/win32k/ntuser/misc.c
trunk/reactos/subsys/win32k/ntuser/monitor.c
trunk/reactos/subsys/win32k/ntuser/painting.c
trunk/reactos/subsys/win32k/ntuser/windc.c
trunk/reactos/subsys/win32k/ntuser/window.c
trunk/reactos/subsys/win32k/ntuser/winpos.c
trunk/reactos/subsys/win32k/objects/bitmaps.c
trunk/reactos/subsys/win32k/objects/brush.c
trunk/reactos/subsys/win32k/objects/cliprgn.c
trunk/reactos/subsys/win32k/objects/color.c
trunk/reactos/subsys/win32k/objects/coord.c
trunk/reactos/subsys/win32k/objects/dc.c
trunk/reactos/subsys/win32k/objects/dib.c
trunk/reactos/subsys/win32k/objects/fillshap.c
trunk/reactos/subsys/win32k/objects/gdiobj.c
trunk/reactos/subsys/win32k/objects/line.c
trunk/reactos/subsys/win32k/objects/palette.c
trunk/reactos/subsys/win32k/objects/path.c
trunk/reactos/subsys/win32k/objects/pen.c
trunk/reactos/subsys/win32k/objects/print.c
trunk/reactos/subsys/win32k/objects/region.c
trunk/reactos/subsys/win32k/objects/text.c