pllua - pllua: Small changes for compatibility with PostgreSQL 8.4.

Log Message:
-----------
Small changes for compatibility with PostgreSQL 8.4.

Modified Files:
--------------
pllua:
Makefile (r1.10 -> r1.11)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pllua/pllua/Makefile?r1=1.10&r2=1.11)
pllua.h (r1.16 -> r1.17)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pllua/pllua/pllua.h?r1=1.16&r2=1.17)
plluaapi.c (r1.18 -> r1.19)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pllua/pllua/plluaapi.c?r1=1.18&r2=1.19)
rowstamp.h (r1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pllua/pllua/rowstamp.h?r1=1.1&r2=1.2)