plproxy - plproxy: row stamp checks for both 8.2 and 8.3

Log Message:
-----------
row stamp checks for both 8.2 and 8.3

Modified Files:
--------------
plproxy/src:
function.c (r1.2 -> r1.3)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/plproxy/plproxy/src/function.c.diff?r1=1.2&r2=1.3)
plproxy.h (r1.2 -> r1.3)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/plproxy/plproxy/src/plproxy.h.diff?r1=1.2&r2=1.3)