Rewrite of fullscreen toggling in linux. This goes back to using the EWMH specifications. I wasn't using it right before, but now it should work on all EWMH compliant window managers (like KDE, Metacity, Compiz, etc). Since this doesn't need an override redirect Alt-Tab works even in fullscreen mode. This also allows for some other nice things to be done.

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@5199 8ced0084-cf51-0410-be5f-012b33b47a6e

Source/Core/DolphinWX/Src/Main.cpp

@@ -533,6 +533,8 @@ void Host_Message(int Id)
 #if defined(HAVE_X11) && HAVE_X11
 	switch(Id)
 	{
+		case WM_USER_CREATE:
+		case TOGGLE_FULLSCREEN:
 		case WM_USER_STOP:
 		case WM_USER_PAUSE:
 			{