elog(LOG), elog(DEBUG)

There's a TODO item to make elog(LOG) a separate level. I propose the
name INFO. It would be identical to DEBUG in effect, only with a
different label. Additionally, all DEBUG logging should either be
disabled unless the debug_level is greater than zero, or alternatively
some elog(DEBUG) calls should be converted to INFO conditional on a
configuration setting (like log_pid, for example).

The stricter distinction between DEBUG and INFO would also yield the
possibility of optionally sending DEBUG output to the frontend, as has
been requested a few times.

--
Peter Eisentraut peter_e(at)gmx(dot)net http://funkturm.homeip.net/~peter