[Pgpool-committers] pgpool - pgpool-II: Add pool_worker_child.c which implements new worker

[User T-ishii]

Log Message:
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Add pool_worker_child.c which implements new worker process
for checking standby lagging in streaming replication.
Also remove unnecessary variables in child.c.

Modified Files:
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    pgpool-II:
        Makefile.am (r1.36 -> r1.37)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/Makefile.am?r1=1.36&r2=1.37)
        Makefile.in (r1.40 -> r1.41)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/Makefile.in?r1=1.40&r2=1.41)
        child.c (r1.52 -> r1.53)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/child.c?r1=1.52&r2=1.53)
        main.c (r1.73 -> r1.74)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/main.c?r1=1.73&r2=1.74)
        pool.h (r1.74 -> r1.75)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/pool.h?r1=1.74&r2=1.75)
        pool_config.h (r1.3 -> r1.4)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/pool_config.h?r1=1.3&r2=1.4)

Added Files:
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    pgpool-II:
        pool_worker_child.c (r1.1)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/pool_worker_child.c?rev=1.1&content-type=text/x-cvsweb-markup)