Reversed r3840. Broke tests.

lib/Doctrine/Builder/Migration.php

@@ -157,9 +157,9 @@ END;
     {
         if ($modelsPath) {
             $models = Doctrine::loadModels($modelsPath);
-        }
+        } else {
-
             $models = Doctrine::getLoadedModels();
+        }
 
         $foreignKeys = array();
 

lib/Doctrine/Export.php

@@ -1047,9 +1047,9 @@ class Doctrine_Export extends Doctrine_Connection_Module
     {
         if ($directory !== null) {
             $models = Doctrine::loadModels($directory);
-        }
+        } else {
-
             $models = Doctrine::getLoadedModels();
+        }
 
         $this->exportClasses($models);
     }

lib/Doctrine/Export/Schema.php

@@ -45,10 +45,10 @@ class Doctrine_Export_Schema
     public function buildSchema($directory = null, $models = array())
     {
         if ($directory) {
-            Doctrine::loadModels($directory);
+            $loadedModels = Doctrine::loadModels($directory);
-        }
+        } else {
-
             $loadedModels = Doctrine::getLoadedModels();
+        }
 
         $array = array();