[win32k]

[win32k]
- Simplify co_IntWaitMessage
- In co_IntGetPeekMessage, call co_MsqWaitForNewMessages instead of co_IntWaitMessage when we  need to wait for a new message. co_IntWaitMessage calls co_IntPeekMessage again without removing messages. The problem is that processing some messages produce other messages or hooks even though the message must not be removed. As a result some messages like WM_NCHITTEST were received twice by the application
- Should fix bug 3232

svn path=/trunk/; revision=51224