Category-based permalinks broken in trunk

[markjaquith]

Category-based permalinks are broken in trunk (as of revision [5570])

Example permalink structure:

/index.php/%category%/%postname%/

Expected permalink:

http://example.com/index.php/cat-nicename/post-nicename/

Actual permalink:

http://example.com/index.php//post-nicename/

Also: typing the expected permalink into the address bar gives 404.

[ryan]

(In [5576]) Fix category permalinks. Update cat_ID to term_id. fixes #4349 see #4189