Build System Changes

-=-=-=-=-=-=-=-=-=-=

Build System:
-Big clean up of SCons, changed how builds are done to a much cleaner method (check the Github Wiki for instructions).
-Deactivated BlackBerry10 (sorry), if no mantainer found (or BlackBerry does not send us a Passort ;), platform will be removed as we have no longer devices to test.

Engine:
-Removed deprecated object and scene format (was in there just for compatibility, not in use since a long time).
-Added ability to open scenes even if a node type was removed (will try to guess the closest type).
-Removed deprecated node types.

main/main.cpp

@@ -43,7 +43,7 @@
 #include "io/resource_loader.h"
 #include "scene/main/scene_main_loop.h"
 
-#include "scene/io/scene_loader.h"
+
 #include "script_language.h"
 #include "io/resource_loader.h"
 
@@ -1131,10 +1131,6 @@ bool Main::start() {
 #ifdef TOOLS_ENABLED
 			if (editor) {
 
-#ifdef OLD_SCENE_FORMAT_ENABLED
-				if (convert_old)
-					editor_node->set_convert_old_scene(true);
-#endif
 
 				if (_import!="") {
 
@@ -1214,14 +1210,6 @@ bool Main::start() {
 				if (scenedata.is_valid())
 					scene=scenedata->instance();
 
-#ifdef OLD_SCENE_FORMAT_ENABLED
-
-				if (!scene) {
-					scene = SceneLoader::load(local_game_path,true);
-				}
-
-#endif
-
 				ERR_EXPLAIN("Failed loading scene: "+local_game_path);
 				ERR_FAIL_COND_V(!scene,false)
 				sml->get_root()->add_child(scene);