Fix security alert using a patch from PostgreSQL's CVS repository:
Prevent overrunning a heap-allocated buffer if more than 1024
parameters to a refcursor declaration are specified. This is a
minimally-invasive fix for the buffer overrun.
Define LATEST_LINK to avoid package name clashes between the different
branches of PostgreSQL.  (Since postgresql-tcltk is hardwired to
branch 7.4, keep its LATEST_LINK to a generic value.)
Set UNIQUENAME and let it be the same for server & client, so each
branch's ports will share the same options file. This adds some no-op
knobs to the -client port, but IMO it is better this way.
Add space inside paranthesis in OSVERSION conditional to work around
(ancient) make bug. 
Remove the Rendez-Vouz knob for 8.0 since I can't find the software
needed to even compile it on FreeBSD.
Bump portrevision (for -server only).
Noted by: kris 
PR: ports/77530 
Approved by: seanc (mentor)