[ros-kernel] patch for my wndproc stuff, testing/feedback/comments/etc wanted

[Jonathan Wilson]

>>9.add a new field IsBuiltinClass to the window class data structure.
> This is not needed in my opinion. As far as I can seen you use this only in
> NtUserCreateWindowEx and it could be easily substituted by check for handles
> (Builtin = ((lpfnWndProcA & 0xFFFF0000) != 0xFFFF0000) && ((lpfnWndProcW &
> 0xFFFF0000) != 0xFFFF0000).
ok, this I aggree with & will fix.