[Pgpool-committers] pgpool - pgpool-II: Fix cancel_request whic was not working at all.

[User T-ishii]

Log Message:
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Fix cancel_request whic was not working at all.

Add pool_coninfo_size, pool_coninfo_num, pool_coninfo for refactering.
Current ConnectionInfo handling is awfully adhoc and hard to maintain.
These modules encapsulate the layout of ConnectionInfo on shmem somewhat.

Modified Files:
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    pgpool-II:
        child.c (r1.58 -> r1.59)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/child.c?r1=1.58&r2=1.59)
        pool_process_context.c (r1.3 -> r1.4)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/pool_process_context.c?r1=1.3&r2=1.4)
        pool_process_context.h (r1.2 -> r1.3)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/pool_process_context.h?r1=1.2&r2=1.3)