[Pgpool-committers] pgpool - pgpool-II: Emit statement log when error or notice message

[User T-ishii]

Log Message:
-----------
Emit statement log when error or notice message comes from backend when
SimpleQuery or Parse executed. 
This is usefull because PostgreSQL does not log particular statement
if the error was detected *before* raw parser get executed.
This typlically happens when encoding error was found.

Modified Files:
--------------
    pgpool-II:
        pool.h (r1.55 -> r1.56)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/pool.h?r1=1.55&r2=1.56)
        pool_process_query.c (r1.192 -> r1.193)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/pool_process_query.c?r1=1.192&r2=1.193)
        pool_proto_modules.c (r1.33 -> r1.34)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/pool_proto_modules.c?r1=1.33&r2=1.34)