pgsql: Fix plpython to not get totally confused by OUT arguments.

Log Message:
-----------
Fix plpython to not get totally confused by OUT arguments.  (It still doesn't
support multiple OUT arguments, though.)

Hannu Krosing

Modified Files:
--------------
    pgsql/src/pl/plpython:
        plpython.c (r1.108 -> r1.109)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/pl/plpython/plpython.c?r1=1.108&r2=1.109)
    pgsql/src/pl/plpython/expected:
        plpython_function.out (r1.10 -> r1.11)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/pl/plpython/expected/plpython_function.out?r1=1.10&r2=1.11)
        plpython_test.out (r1.5 -> r1.6)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/pl/plpython/expected/plpython_test.out?r1=1.5&r2=1.6)
    pgsql/src/pl/plpython/sql:
        plpython_function.sql (r1.10 -> r1.11)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/pl/plpython/sql/plpython_function.sql?r1=1.10&r2=1.11)
        plpython_test.sql (r1.3 -> r1.4)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/pl/plpython/sql/plpython_test.sql?r1=1.3&r2=1.4)