- more Windows-aligned check for object instances

- Fix an error due to "invalid lvalue in assignment" with gcc 4 on
  Darwin 8.0.

winapi_check directory.  Merge winapi_check programs.

  openGL32 (wgl_ext)
- add code to disable some openGL extensions support using wine
  registry key HKLM\Software\Wine\OpenGL\DisabledExtensions (list
  separated by spaces)
- valid/robust implementation of wglChoosePixelFormatARB and
  wglGetPixelFormatAttribivARB (wgl_ext)

  (ie. using real card caps and not ugly way using visuals array) to
  be compatible with opengl32 pixel formats (wgl*PixelFormat* APIs) as
  they need to be the same
- add more traces to xrandr

Implement MsiEnumComponentQualifiers.

- more valid implementation for IWineD3DImpl_Check* APIs (not more
  S_OK for all cases)

Moved a bunch of stubs to dlls/user/misc.c.

  actually needs it
- now using some manifest constants to make code clearer

message.h.