Keymapper:

- Introduced new OSystem method getHardwareKeySet() with default implementation
- Moved global keymap creation to base/main.cpp
- Moved GUI keymap creation to gui/GuiManager.cpp
- Added various safeguard checks to various keymapper methods

Now it is really possible to add keymapper to all backends.

svn-id: r40439

backends/platform/sdl/sdl.cpp

@@ -170,11 +170,6 @@ void OSystem_SDL::initBackend() {
 		setupMixer();
 	}
 
-	// Setup the keymapper with backend's set of keys
-	// NOTE: must be done before creating TimerManager 
-	// to avoid race conditions in creating EventManager
-	setupKeymapper();
-
 	// Create and hook up the timer manager, if none exists yet (we check for
 	// this to allow subclasses to provide their own).
 	if (_timer == 0) {