docs and createlang patch for plperl

Attached is a tarball that contains:

pl-perl.sgml - A start at documentation.
	Thomas, I didn't know where this belongs. Does
	it need to be integrated into the user manual
	or should it stand on its own. If it needs
	to stand alone, then all the docbook declarations
	need to be added at the front.

createlang.sh.diff - a patch to add plperl
	to the repertoire of createlang.sh
-- 
Mark Hollomon
mhh@mindspring.com