Ensure proper config version when reading the new configuration file.

core/globals.cpp

@@ -38,6 +38,8 @@
 #include "io/file_access_network.h"
 #include "variant_parser.h"
 
+#define FORMAT_VERSION 3
+
 GlobalConfig *GlobalConfig::singleton=NULL;
 
 GlobalConfig *GlobalConfig::get_singleton() {
@@ -491,6 +493,14 @@ Error GlobalConfig::_load_settings(const String p_path) {
 		}
 
 		if (assign!=String()) {
+			if (section==String() && assign=="config_version") {
+				int config_version = value;
+				if (config_version > FORMAT_VERSION) {
+					memdelete(f);
+					ERR_FAIL_COND_V(config_version > FORMAT_VERSION,ERR_FILE_CANT_OPEN);
+				}
+
+			}
 			set(section+"/"+assign,value);
 		} else if (next_tag.name!=String()) {
 			section=next_tag.name;
@@ -608,6 +618,9 @@ Error GlobalConfig::_save_settings_text(const String& p_file,const Map<String,Li
 		ERR_FAIL_COND_V(err,err)
 	}
 
+	file->store_string("config_version="+itos(FORMAT_VERSION)+"\n");
+
+
 	for(Map<String,List<String> >::Element *E=props.front();E;E=E->next()) {
 
 		if (E!=props.front())

tools/editor/editor_file_system.cpp

@@ -544,7 +544,7 @@ void EditorFileSystem::_scan_new_dir(EditorFileSystemDirectory *p_dir,DirAccess
 			if (f.begins_with(".")) //ignore hidden and . / ..
 				continue;
 
-			if (FileAccess::exists(cd.plus_file(f).plus_file("engine.cfg"))) // skip if another project inside this
+			if (FileAccess::exists(cd.plus_file(f).plus_file("godot.cfg"))) // skip if another project inside this
 				continue;
 
 			dirs.push_back(f);
@@ -733,7 +733,7 @@ void EditorFileSystem::_scan_fs_changes(EditorFileSystemDirectory *p_dir,const S
 				int idx = p_dir->find_dir_index(f);
 				if (idx==-1) {
 
-					if (FileAccess::exists(cd.plus_file(f).plus_file("engine.cfg"))) // skip if another project inside this
+					if (FileAccess::exists(cd.plus_file(f).plus_file("godot.cfg"))) // skip if another project inside this
 						continue;
 
 					EditorFileSystemDirectory *efd = memnew( EditorFileSystemDirectory );