[Pgpool-committers] pgpool - pgpool-II: Add error message to send_simplequery_message().

[User T-ishii]

Log Message:
-----------
Add error message to send_simplequery_message().
Enhance do_query() so that it emmits an error message when receiving ERROR
from backend.

Modified Files:
--------------
    pgpool-II:
        pool_process_query.c (r1.254 -> r1.255)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/pool_process_query.c?r1=1.254&r2=1.255)