Sizzle: minor adjustments and a small fix in the child selector regex

sizzle @ a45c012a

-Subproject commit e89d06c4134ec439e52382acd0e569e97fed7ebc
+Subproject commit a45c012a0502bb7363195f1482c1b19f1c49a92f

src/sizzle-jquery.js

@@ -2,7 +2,7 @@
 Sizzle.attr = jQuery.attr;
 jQuery.find = Sizzle;
 jQuery.expr = Sizzle.selectors;
-jQuery.expr[":"] = jQuery.expr.filters;
+jQuery.expr[":"] = jQuery.expr.pseudos;
 jQuery.unique = Sizzle.uniqueSort;
 jQuery.text = Sizzle.getText;
 jQuery.isXMLDoc = Sizzle.isXML;