Autocomplete Tests: Fix oldIE test failures by accounting for casing differences in .html() return values.(cherry picked from commit 7071727)

Author: mikesherov

tests/unit/autocomplete/autocomplete_core.js

@@ -195,7 +195,7 @@ test( ".replaceWith() (#9172)", function() {
 		replacement = "<div>test</div>",
 		parent = element.parent();
 	element.replaceWith( replacement );
-	equal( parent.html(), replacement );
+	equal( parent.html().toLowerCase(), replacement );
 });
 
 }( jQuery ) );