[Pgpool-committers] pgpool - pgpool-II: Add missing header file.

[User T-ishii]

Log Message:
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Add missing header file.

Modified Files:
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    pgpool-II:
        pool_query_context.c (r1.6 -> r1.7)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/pool_query_context.c?r1=1.6&r2=1.7)