Handle pathinfo structures when determining if verbose page rules should be used. Props dlo. fixes #6650 #6570 for trunk

git-svn-id: http://svn.automattic.com/wordpress/trunk@7665 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/rewrite.php

@@ -993,6 +993,8 @@ class WP_Rewrite {
 
 		// Enable generic rules for pages if permalink structure doesn't begin with a wildcard.
 		$structure = ltrim($this->permalink_structure, '/');
+		if ( $this->using_index_permalinks() )
+			$structure = ltrim($this->permalink_structure, $this->index . '/');
 		if ( 0 === strpos($structure, '%postname%') ||
 			 0 === strpos($structure, '%category%') ||
 			 0 === strpos($structure, '%tag%') ||