[Win32k]

[Win32k]
- Michael Martin found a create window and crash exit issue by testing programs from http://www.magma.ca/~wjr/ PEview. Fixed by replacing UserFreeWindowInfo with co_UserDestroyWindow at cleanup exit.
- Added more window death and thread checks.
- Started the morphing into WND structure from window object.
- Tested: wine user32 tests, AbiWord 2.6.8, Seamonkey 2.0, FF 3.5 and OOo 2.4.3.

svn path=/trunk/; revision=44575