libpq and psql.c have been modified to do various things they didn't do

libpq and psql.c have been modified to do various things they didn't do
before (plus some optimisations/bug fixes et al).  I've included a small
demo transcript below. Note that all of of the display
functionality/intelligence you see here, can be had merely by calling
the new LIBPQ PQprint() routine with the appropriate arguments/options,
including the HTML3 output guff.

submitted by:  Julian Assange <proff@suburbia.net>