[Pgpool-committers] pgpool - pgpool-II: Add new configuration parameter

[User T-ishii]

Log Message:
-----------
Add new configuration parameter fail_over_on_backend_error which
controls the behavior when write to backend socket fails.

Also add pool_log when postmaster administrative shutdown detected.

Modified Files:
--------------
    pgpool-II:
        pgpool.conf.sample (r1.28 -> r1.29)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/pgpool.conf.sample?r1=1.28&r2=1.29)
        pool.h (r1.46 -> r1.47)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/pool.h?r1=1.46&r2=1.47)
        pool_config.c (r1.31 -> r1.32)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/pool_config.c?r1=1.31&r2=1.32)
        pool_config.l (r1.27 -> r1.28)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/pool_config.l?r1=1.27&r2=1.28)
        pool_process_query.c (r1.179 -> r1.180)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/pool_process_query.c?r1=1.179&r2=1.180)
        pool_process_reporting.c (r1.1 -> r1.2)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/pool_process_reporting.c?r1=1.1&r2=1.2)
        pool_stream.c (r1.17 -> r1.18)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/pool_stream.c?r1=1.17&r2=1.18)