plproxy - plproxy: accept int2 and int8 from hash function

Log Message:
-----------
accept int2 and int8 from hash function

Modified Files:
--------------
plproxy/expected:
plproxy_test.out (r1.5 -> r1.6)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/plproxy/plproxy/expected/plproxy_test.out.diff?r1=1.5&r2=1.6)
plproxy/sql:
plproxy_test.sql (r1.5 -> r1.6)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/plproxy/plproxy/sql/plproxy_test.sql.diff?r1=1.5&r2=1.6)
plproxy/src:
execute.c (r1.12 -> r1.13)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/plproxy/plproxy/src/execute.c.diff?r1=1.12&r2=1.13)