Merge branch 'rename-execute' into experimental

Conflicts:
	src/Symfony/Component/Form/Resources/config/validation.xml

src/Symfony/Component/Form/Resources/config/validation.xml

@@ -5,7 +5,7 @@
     xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">
 
   <class name="Symfony\Component\Form\Form">
-    <constraint name="Callback">validateData</constraint>
+    <constraint name="Callback"><value>validateData</value></constraint>
     <property name="children">
       <constraint name="Valid" />
     </property>