Installation on PostgreSQL

Hello,
in nodeorder.install I see cases for installation on PostreSQL are skipped and based on the comments in the code it is up to the user to do required modifications in DB. Note this worked for me (postgresql-server-8.1.23-1.el5_7.3):

ALTER TABLE {term_node} ADD COLUMN weight_in_tid int_unsigned NOT NULL default '0';

So IMO this can be added into the module installation code.