-fix bug in cache for atlas import/export

-fix some menus
-fixed bug in out transition curves
-detect and remove file:/// in collada
-remove multiscript for now
-remove dependencies on mouse in OS, moved to Input
-avoid fscache from screwing up (fix might make it slower, but it works)
-funcref was missing, it's there now

drivers/mpc/audio_stream_mpc.cpp

@@ -140,7 +140,7 @@ mpc_bool_t AudioStreamMPC::_mpc_canseek(mpc_reader *p_reader) {
 
 bool AudioStreamMPC::_can_mix() const {
 
-	return active && !paused;
+	return /*active &&*/ !paused;
 }