[Pgpool-committers] pgpool - pgpool-II: Modfify pool_send_error_message() so that it won't

[User T-ishii]

Log Message:
-----------
Modfify pool_send_error_message() so that it won't be blocked
by sending packet to the closing frontend connection.
Also rename set_non_block() and unset_non_block() to
pool_sen_non_block() and pool_unset_non_block() respectively
to make them public functions.

Modified Files:
--------------
    pgpool-II:
        pool.h (r1.12 -> r1.13)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/pool.h.diff?r1=1.12&r2=1.13)
        child.c (r1.12 -> r1.13)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/child.c.diff?r1=1.12&r2=1.13)