[2.0] Fixing issue with multiple class directory loading in Annotations driver

lib/Doctrine/ORM/Mapping/Driver/AnnotationDriver.php

@@ -346,25 +346,35 @@ class AnnotationDriver implements Driver
     public function getAllClassNames()
     {
         if ($this->_classDirectory) {
-            $iter = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($this->_classDirectory),
-                    \RecursiveIteratorIterator::LEAVES_ONLY);
+            $classes = array();
+            
+            foreach ((array) $this->_classDirectory as $dir) {
+                $iter = new \RecursiveIteratorIterator(
+                    new \RecursiveDirectoryIterator($this->_classDirectory),
+                    \RecursiveIteratorIterator::LEAVES_ONLY
+                );
         
                 $declared = get_declared_classes();
+                
                 foreach ($iter as $item) {
                     $info = pathinfo($item->getPathName());
+                    
                     if ( ! isset($info['extension']) || $info['extension'] != 'php') {
                         continue;
                     }
+                    
                     require_once $item->getPathName();
                 }
+                
                 $declared = array_diff(get_declared_classes(), $declared);
 
-            $classes = array();
                 foreach ($declared as $className) {                 
                     if ( ! $this->isTransient($className)) {
                         $classes[] = $className;
                     }
                 }
+            }    
+                
             return $classes;
         } else {
             return array();