Correct rewrite tag for hierarchical post types without a query_var.

Hierarchical rewrite rules operate via the 'pagename' query variable which is
passed to get_page_by_path(). However, the current rewrite rules use the 'name'
query variable for hierarchical types without a custom query_var.

Fixes #16323.

Built from https://develop.svn.wordpress.org/trunk@25182


git-svn-id: http://core.svn.wordpress.org/trunk@25154 1a063a9b-81f0-0310-95a4-ce76da25c4cd