Log Message:
-----------
Enhance error message.
Modified Files:
--------------
pgpool-II:
pool_connection_pool.c (r1.33 -> r1.34)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/pool_connection_pool.c?r1=1.33&r2=1.34)