Placing button should now be threadsafe
Merge remote-tracking branch 'origin/f-roadmap-2013' into f-multithread-fixes

Conflicts:
	Plugins/Accessibility/CK.WindowManager/WindowManagerExecutor.cs
Merge branch 'f-multithread-fixes' into f-roadmap-2013
Merge remote-tracking branch 'origin/f-roadmap-2013' into f-roadmap-2013

Conflicts:
	Plugins/Accessibility/CK.WindowManager/WindowManagerExecutor.cs
thread fix when restoring CKWindows