Fixed current page ancestor menu item

reference:
http://codex.wordpress.org/Function_Reference/wp_list_pages#Current-Page_Ancestor_Menu_Items
http://codex.wordpress.org/Function_Reference/wp_nav_menu#Current-Page_Menu_Items
Fixed current page ancestor menu item

reference:
http://codex.wordpress.org/Function_Reference/wp_list_pages#Current-Page_Ancestor_Menu_Items
http://codex.wordpress.org/Function_Reference/wp_nav_menu#Current-Page_Menu_Items
Fixed current page ancestor menu item

reference:
http://codex.wordpress.org/Function_Reference/wp_list_pages#Current-Page_Ancestor_Menu_Items
http://codex.wordpress.org/Function_Reference/wp_nav_menu#Current-Page_Menu_Items
Merge pull request #626 from joseluis/patch-2

Fixed current page ancestor menu item