[Pgpool-committers] pgpool - pgpool-II: Fix bug with function_call_walker().

[User T-ishii]

Log Message:
-----------
Fix bug with function_call_walker().
It always regarded the first element is the function name, which is
not true if the function has schema qualification. In this case we
should use lsecond() rather than lfirst() to extract the function name
because the first element is the schema name.

Tags:
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V3_0_STABLE

Modified Files:
--------------
    pgpool-II:
        pool_select_walker.c (r1.6 -> r1.6.2.1)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgpool/pgpool-II/pool_select_walker.c?r1=1.6&r2=1.6.2.1)