plproxy - plproxy: allow direct argument references for RUN statement:

Log Message:
-----------
allow direct argument references for RUN statement: RUN ON $1;

Modified Files:
--------------
plproxy/src:
parser.y (r1.13 -> r1.14)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/plproxy/plproxy/src/parser.y.diff?r1=1.13&r2=1.14)
plproxy/sql:
plproxy_test.sql (r1.6 -> r1.7)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/plproxy/plproxy/sql/plproxy_test.sql.diff?r1=1.6&r2=1.7)
plproxy/expected:
plproxy_test.out (r1.6 -> r1.7)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/plproxy/plproxy/expected/plproxy_test.out.diff?r1=1.6&r2=1.7)