[Pgpool-committers] pgpool - pgpool-II: Fix send_to_where() so that it correctly recognizes

[User T-ishii]

Log Message:
-----------
Fix send_to_where() so that it correctly recognizes FOR SHARE/UPDATE
clause even if it's in subquery. Before it only recognized
when the clause was in top level of SELECT. For this new function
pool_has_insertinto_or_locking_clause() is added.

Make pattern_compare() to static since it's not used anywhere outside
of pool_select_walker.c

Modified Files:
--------------
    pgpool-II:
        pool_config.h (r1.16 -> r1.17)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/pool_config.h?r1=1.16&r2=1.17)
        pool_query_context.c (r1.45 -> r1.46)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/pool_query_context.c?r1=1.45&r2=1.46)
        pool_select_walker.c (r1.12 -> r1.13)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/pool_select_walker.c?r1=1.12&r2=1.13)
        pool_select_walker.h (r1.5 -> r1.6)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/pool_select_walker.h?r1=1.5&r2=1.6)