Misc Fixes

==========

-NOTIFICATION_WM_QUIT fixed on android (seems tha way this is reported changed in newer sdk)
-WIP implementation of APK Expansion APIs for publishing games larger than 50mb in Play Store
-Feaures in the new tutorials are all present in the sourcecode
-This (hopefully) should get rid of the animation list order getting corrupted
-Improved 3D Scene Importer (Skeletons, Animations and other stuff were not being merged). Anything missing?
-In code editor, the automatic syntax checker will only use file_exists() to check preload() else it might freeze the editor too much while typing if the preload is a big resource
-Fixed bugs in PolygonPathFinder, stil pending to do a node and a demo

core/globals.cpp

@@ -243,12 +243,27 @@ bool Globals::_load_resource_pack(const String& p_pack) {
 	return true;
 }
 
-Error Globals::setup(const String& p_path) {
+Error Globals::setup(const String& p_path,const String & p_main_pack) {
 
 	//an absolute mess of a function, must be cleaned up and reorganized somehow at some point
 	
 	//_load_settings(p_path+"/override.cfg");
 
+	if (p_main_pack!="") {
+
+		bool ok = _load_resource_pack(p_main_pack);
+		ERR_FAIL_COND_V(!ok,ERR_CANT_OPEN);
+
+		if (_load_settings("res://engine.cfg")==OK || _load_settings_binary("res://engine.cfb")==OK) {
+
+			_load_settings("res://override.cfg");
+
+		}
+
+		return OK;
+
+	}
+
 	if (OS::get_singleton()->get_executable_path()!="") {
 
 		if (_load_resource_pack(OS::get_singleton()->get_executable_path())) {