CVS HEAD not only has menu options to edit pg_hba.conf and
postgresql.conf files on the local file system or via database
connection (if the server is instrumented with the admin package), but
also has command line options:
-c <datadir> will try to locate both files in that directory
-c <configfile> will edit that file, type taken from name
-ch <hba_file> edit file as pg_hba.conf
-cm <cfg_file> edit file as postgresql.conf
This is meant for future versions of installers.
Regards,
Andreas