[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.

Tags:
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V3_0_STABLE

Modified Files:
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    pgpool-II:
        pool_process_query.c (r1.249.2.6 -> r1.249.2.7)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/pool_process_query.c?r1=1.249.2.6&r2=1.249.2.7)