pllua - pllua: Added support for PostgreSQL 8.3.

Log Message:
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Added support for PostgreSQL 8.3.

Modified Files:
--------------
pllua:
pllua.c (r1.12 -> r1.13)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pllua/pllua/pllua.c.diff?r1=1.12&r2=1.13)
plluaapi.c (r1.12 -> r1.13)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pllua/pllua/plluaapi.c.diff?r1=1.12&r2=1.13)
plluaspi.c (r1.13 -> r1.14)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pllua/pllua/plluaspi.c.diff?r1=1.13&r2=1.14)