varchar.diff
------------
This patch was necessary for the OpenLink Postgres Database Agent.
I think this fixes a bug anyway.

The following query demonstrates this bug:

  create table foo (bar varchar);
  insert into foo values ('');          -- no problem
  select * from foo where bar = '';     -- fails

The idea is that its right beside PORTNAME, so if it doesn't apply to
the OS in question, it can be rememberd to disable it...

Submitted by: david bennett <dave@bensoft.com>
	      marc g. fournier <scrappy@ki.net>

submitted by: Paul "Shag" Walmsley <ccshag@cclabs.missouri.edu>

       causes segmentation fault.

Thanks to: Salvador Ortiz Garcia, Robert Patrick, Paul 'Shag' Walmsley,
           and James Cooper for finding and fixing the problem.