Add new information for utility commands.

Thomas G. Lockhart <lockhart@fourpalms.org>

Commit: 37d2f76ef799a90d5474937378f892b688f37f11
Author: Thomas G. Lockhart <lockhart@fourpalms.org>
Date: 1998-10-05T02:54:45Z
Releases: 7.1.1
Add new information for utility commands.
 Haven't yet done cleardbdir, ipcclean, pg_passwd, and pg_upgrade.
Add reference info for the SQL VACUUM command (oops, forgot it earlier).

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