[NtUser]

[NtUser]
- Fix up Language Layout Hotkey Toggle support for the new Keyboard switching. Support registry settings. Dedicated to Dmitry Chapyshev.
- The registry entry it reads from is the wrong (the short number) one. Someone with registry knowledge please help.
  Also VK_LSHIFT is passed all the time and not VK_RSHIFT (WIP). Support for Left Alt and Control work including SysParam.
- Side Tracks : Fixed CORE-5683. ReactOS can switch from keyboard processing or from DeferWindowProc.

svn path=/trunk/; revision=72197