-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

tools/collada/collada.cpp

@@ -344,6 +344,9 @@ void Collada::_parse_image(XMLParser& parser) {
 						// path is relative to file being loaded, so convert to a resource path
 						path=Globals::get_singleton()->localize_path(state.local_path.get_base_dir()+"/"+path);
 
+					} else if (path.find("file:///")==0) {
+						path=path.replace_first("file:///","");
+						path=Globals::get_singleton()->localize_path(path);
 					}
 
 					image.path=path;