Roll-back of #749748. This broke JavaScript on node add forms, and probably elsewhere.

includes/form.inc

@@ -2852,6 +2852,9 @@ function form_process_fieldset(&$element, &$form_state) {
     $form_state['groups'][$group][] = &$element;
   }
 
+  // Contains form element summary functionalities.
+  $element['#attached']['js']['misc/form.js'] = array('weight' => JS_LIBRARY + 1);
+
   // The .form-wrapper class is required for #states to treat fieldsets like
   // containers.
   if (!isset($element['#attributes']['class'])) {

modules/node/node.admin.inc

@@ -196,6 +196,8 @@ function node_filter_form() {
     $form['filters']['actions']['reset'] = array('#type' => 'submit', '#value' => t('Reset'));
   }
 
+  drupal_add_js('misc/form.js');
+
   return $form;
 }
 

modules/system/system.module

@@ -279,11 +279,6 @@ function system_element_info() {
     '#method' => 'post',
     '#action' => request_uri(),
     '#theme_wrappers' => array('form'),
-    '#attached' => array(
-      'js' => array(
-        'misc/form.js' => array('weight' => JS_LIBRARY + 1),
-      ),
-    ),
   );
   $types['page'] = array(
     '#show_messages' => TRUE,

modules/user/user.admin.inc

@@ -92,6 +92,8 @@ function user_filter_form() {
     );
   }
 
+  drupal_add_js('misc/form.js');
+
   return $form;
 }