Tabs: Encode spaces from window.location. Fixes #8777 - Tabs fail in Safari 5.1 when window.location contains a space.

(cherry picked from commit c6b52db)

Author: scottgonzalez

ui/jquery.ui.tabs.js

@@ -23,7 +23,12 @@ function getNextTabId() {
 
 function isLocal( anchor ) {
 	return anchor.hash.length > 1 &&
-		anchor.href.replace( rhash, "" ) === location.href.replace( rhash, "" );
+		anchor.href.replace( rhash, "" ) ===
+			location.href.replace( rhash, "" )
+				// support: Safari 5.1
+				// Safari 5.1 doesn't encode spaces in window.location
+				// but it does encode spaces from anchors (#8777)
+				.replace( /\s/g, "%20" );
 }
 
 $.widget( "ui.tabs", {