User32: Added LockWorkStation, ExitWindowsEx, AdjustWindowRect[Ex], and Get/SetWindowPlacement

WinUser: Added ExitWindows codes, Window Style codes, and the
WindowPlacement structure.
I think the "better" way of doing this is to use [ignore](http://stackoverflow.com/questions/412409/junits-ignore). Or maybe to mark the test private (I think it doesn't run in that case).