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/Frame.h

@@ -303,6 +303,9 @@ class CFrame : public wxFrame
 
 		void OnGameListCtrl_ItemActivated(wxListEvent& event);
 		void DoFullscreen(bool _F);
+#if defined HAVE_X11 && HAVE_X11
+		void X11_SendClientEvent(const char *message);
+#endif
 
 		// MenuBar
 		// File - Drive