Bug 421196: fix xul.css binding rule to make rich autocomplete popup usable for toolkit users, r=enndeakin

toolkit/content/xul.css

@@ -745,7 +745,7 @@ panel[type="autocomplete"] {
   -moz-binding: url("chrome://global/content/bindings/autocomplete.xml#autocomplete-result-popup");
 }
 
-panel[type="rich-autocomplete"] {
+panel[type="autocomplete-richlistbox"] {
   -moz-binding: url("chrome://global/content/bindings/autocomplete.xml#autocomplete-rich-result-popup");
 }