[Pgpool-committers] pgpool - pgpool-II: Change "do_md5: read_password_packet failed" message

[User Kitagawa]

Log Message:
-----------
Change "do_md5: read_password_packet failed" message into debug level.
This error message is emitted if frontends(psql etc.) authenticate
a password, because they might reconnect at the time.

Reason for change:
- PostgreSQL does not emit error messages at the time.
- pgpool-II does not emit error messages when using the other
  authentication methods.

Modified Files:
--------------
    pgpool-II:
        pool_auth.c (r1.29 -> r1.30)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/pool_auth.c?r1=1.29&r2=1.30)