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

Log Message:
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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)