pgsql: Add: > * Allow log_min_messages to be specified on a per-module

Log Message:
-----------
Add:

> * Allow log_min_messages to be specified on a per-module basis
>
>   This would allow administrators to see more detailed information from
>   specific sections of the backend, e.g. checkpoints, autovacuum, etc.

Modified Files:
--------------
    pgsql/doc:
        TODO (r1.1790 -> r1.1791)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/TODO.diff?r1=1.1790&r2=1.1791)
    pgsql/doc/src/FAQ:
        TODO.html (r1.294 -> r1.295)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/FAQ/TODO.html.diff?r1=1.294&r2=1.295)