Merge branch '6.4' into 7.2

* 6.4:
  [FrameworkBundle] Add missing html5-allow-no-tld to XSD file

Author: nicolas-grekas

Resources/config/schema/symfony-1.0.xsd

@@ -306,6 +306,7 @@
     <xsd:simpleType name="email-validation-mode">
         <xsd:restriction base="xsd:string">
             <xsd:enumeration value="html5" />
+            <xsd:enumeration value="html5-allow-no-tld" />
             <xsd:enumeration value="loose" />
             <xsd:enumeration value="strict" />
         </xsd:restriction>