If home changes, write rewrite rules to new location. http://mosquito.wordpress.org/view.php?id=1143

git-svn-id: https://develop.svn.wordpress.org/trunk@2494 602fd350-edb4-49c9-b593-d223f7449a82

wp-admin/options.php

@@ -70,6 +70,8 @@ case 'update':
     if ($any_changed) {
 			// If siteurl or home changed, reset cookies.
 			if ( get_settings('siteurl') != $old_siteurl || get_settings('home') != $old_home ) {
+				// If home changed, write rewrite rules to new location.
+				save_mod_rewrite_rules();
 				// Get currently logged in user and password.
 				get_currentuserinfo();
 				// Clear cookies for old paths.