fixed: base_url_redirect config option was not read from the config file

and was not used when checking for base url redirect
fixed: return values from plugins should be given in a special structure
       they were remembered in plugin object (ret_false, ret_true)
       and consequently were not thread safe
       now all plugin.Call() methods return PluginRes structure 
       in which there are ret_false and ret_true variables       
changed: small refactoring in AddUser winix function



git-svn-id: svn://ttmath.org/publicrep/winix/trunk@827 e52654a7-88a9-db11-a3e9-0013d4bc506e

core/app.cpp

@@ -187,6 +187,14 @@ void App::BaseUrlRedirect(int code)
 
 bool App::BaseUrlRedirect()
 {
+	plugin.Call((Session*)0, WINIX_BASE_URL_REDIRECT);
+
+	if( !cur.request->redirect_to.empty() )
+		return true;
+
+	if( !config.base_url_redirect )
+		return false;
+
 	if( config.base_url.empty() )
 		return false;