pllua - pllua: Added raw datum support, "fromstring" function, and type

Log Message:
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Added raw datum support, "fromstring" function, and type caching. Updated docs.
A few small bug fixes.

Modified Files:
--------------
pllua:
pllua.c (r1.13 -> r1.14)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pllua/pllua/pllua.c.diff?r1=1.13&r2=1.14)
pllua.h (r1.12 -> r1.13)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pllua/pllua/pllua.h.diff?r1=1.12&r2=1.13)
plluaapi.c (r1.14 -> r1.15)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pllua/pllua/plluaapi.c.diff?r1=1.14&r2=1.15)
plluaspi.c (r1.15 -> r1.16)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pllua/pllua/plluaspi.c.diff?r1=1.15&r2=1.16)
pllua/docs:
index.html (r1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pllua/pllua/docs/index.html.diff?r1=1.1&r2=1.2)

Added Files:
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pllua/expected:
plluatest.out (r1.1)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pllua/pllua/expected/plluatest.out?rev=1.1&content-type=text/x-cvsweb-markup)
pllua/sql:
plluatest.sql (r1.1)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pllua/pllua/sql/plluatest.sql?rev=1.1&content-type=text/x-cvsweb-markup)

Removed Files:
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pllua:
plluau.c
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pllua/pllua/plluau.c)