Fix Postgres support

Thanks, committed. I updated all the previous updates also to remove the AFTER for pgsql.

Somebody added KEY during a checkin that fixed this problem. As a result PGSQL is now broken.

Thanks pearcec@drupal.org.

This was caused by the addition of this patch: http://drupal.org/node/136166, which works fine in mySQL. If it doesn't work in pgSQL, we should only remove the key from pgSQL, as it works fine in mySQL.

...or just fix Postgres support.
--
Stefan Kudwien
_{unleashed minds}

Thanks smk-ka (and sun for bumping)! Committed.