[new] databases/pspg: pager for tabular data

Hello ports,

Thanks to a thread on misc@ I've found pspg: a pager designed for
tabular data. Unfortunately it doesn't ship with a manpage, but
is really easy to use. For example, to use it as pager for psql, set
PSQL_PAGER=pspg (or, even better, PSQL_PAGER='pspg -s20' for a cool
light theme ;-)

% pkg_info pspg
Information for inst:pspg-5.4.0

Comment:
UNIX pager optimized for tabular data

Description:
pspg is a UNIX pager designed to work with tables. It's written for
PostgreSQL, but MySQL or pgcli are supported too and can also be used as
CSV or TSV viewer.

Maintainer: Omar Polo <op@omarpolo.com>

WWW: https://github.com/okbob/pspg


Comments/OK?

Cheers,

Omar Polo


P.S.: I've used CONFIGURE_STYLE=gnu and a do-gen target because it
doesn't use autoheader, so CONFIGURE_STYLE=autoconf failed.
configure.ac needs to be tweaked because otherwise pspg ends up being
liked to both ports readline and base readline.