[Pgpool-committers] pgpool - pgpool-II: Fix connection_cache = false case.

[User T-ishii]

Log Message:
-----------
Fix connection_cache = false case. In this mode, if frontend exits
abnormaly, some global state variables are not reset. For this
purpose, new function reset_variables() added.

Remove unnecessary argument of end_load_balance().

Modified Files:
--------------
    pgpool-II:
        pool_proto_modules.c (r1.23 -> r1.24)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/pool_proto_modules.c?r1=1.23&r2=1.24)
        pool_proto_modules.h (r1.7 -> r1.8)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/pool_proto_modules.h?r1=1.7&r2=1.8)
        pool.h (r1.43 -> r1.44)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/pool.h?r1=1.43&r2=1.44)
        pool_process_query.c (r1.172 -> r1.173)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/pool_process_query.c?r1=1.172&r2=1.173)
        child.c (r1.35 -> r1.36)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/child.c?r1=1.35&r2=1.36)