elog() patch

Here is a patch to clean up elog():

ftp://candle.pha.pa.us/pub/postgresql/mypatches/elog

Here is the detail:

REALLYFATAL => PANIC
STOP => PANIC
New INFO level the prints to client by default
New LOG level the prints to server log by default
Cause VACUUM information to print only to the client in verbose mode
VACUUM doesn't output to server logs
NOTICE => INFO where purely information messages are sent
DEBUG => LOG for purely server status messages
DEBUG removed, kept as backward compatible (will be added near 7.3)
DEBUG5, DEBUG4, DEBUG3, DEBUG2, DEBUG1 added
DebugLvl removed in favor of new DEBUG[1-5] symbols
New server_min_messages GUC parameter with values DEBUG[5-1], INFO, LOG, ...
New client_min_messages GUC parameter with values DEBUG[5-1], LOG, INFO, ...
Server startup now logged with LOG instead of DEBUG
Postmaster -d flag effects only postmaster message, not backend messages
Remove debug_level GUC parameter
elog() numbers now start at 10
Add test to print error message if older elog() values are passed to elog()
Bootstrap mode now has a -d that requires an argument, like postmaster
This clears the -d debug level on backend start. Is that done correctly?

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Bruce Momjian | http://candle.pha.pa.us
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