databases/pg_similarity: Limit to pgsql < 16

This extension seems unmaintained.  It can be patched easily for pgsql
16 but should be updated first.

PR:		278885

*/*: Remove pointers to EOLed pgsql versions

- Remove dotted pgsql versions

Approved by:	portmgr

Remove WWW entries moved into port Makefiles

Commit b7f05445c00f has added WWW entries to port Makefiles based on
WWW: lines in pkg-descr files.

This commit removes the WWW: lines of moved-over URLs from these
pkg-descr files.

Approved by:		portmgr (tcberner)

Add WWW entries to port Makefiles

It has been common practice to have one or more URLs at the end of the
ports' pkg-descr files, one per line and prefixed with "WWW:". These
URLs should point at a project website or other relevant resources.

Access to these URLs required processing of the pkg-descr files, and
they have often become stale over time. If more than one such URL was
present in a pkg-descr file, only the first one was tarnsfered into
the port INDEX, but for many ports only the last line did contain the
port specific URL to further information.

There have been several proposals to make a project URL available as
a macro in the ports' Makefiles, over time.

databases: remove 'Created by' lines

A big Thank You to the original contributors of these ports:

  *  "Choe, Cheng-Dae" whitekid
  *  "Mahdi Mokhtari <mokhi64@gmail.com>"
  *  "Meikel Brandmeyer" <ocaml-sqlite3-port@kotka.de>
  *  <hvo.pm@xs4all.nl>
  *  <jsmith@resonatingmedia.com>
  *  <ports@c0decafe.net>
  *  Aaron Dalton <aaron@FreeBSD.org>
  *  Adam Weinberger <adamw@FreeBSD.org>
  *  Ade Lovett <ade@FreeBSD.org>
  *  Akinori MUSHA aka knu <knu@idaemons.org>
  *  Alan Snelson <Alan@Wave2.org>

Remove # $FreeBSD$ from Makefiles.

Bump PORTREVISION for ports depending on the canonical version of GCC
as defined in Mk/bsd.default-versions.mk which has moved from GCC 8.3
to GCC 9.1 under most circumstances now after revision 507371.

This includes ports
 - with USE_GCC=yes or USE_GCC=any,
 - with USES=fortran,
 - using Mk/bsd.octave.mk which in turn features USES=fortran, and
 - with USES=compiler specifying openmp, nestedfct, c11, c++0x, c++11-lang,
   c++11-lib, c++14-lang, c++17-lang, or gcc-c++11-lib
plus, everything INDEX-11 shows with a dependency on lang/gcc9 now.

PR:		238330

Bump PORTREVISION for ports depending on the canonical version of GCC
defined via Mk/bsd.default-versions.mk which has moved from GCC 7.4 t
GCC 8.2 under most circumstances.

This includes ports
 - with USE_GCC=yes or USE_GCC=any,
 - with USES=fortran,
 - using Mk/bsd.octave.mk which in turn features USES=fortran, and
 - with USES=compiler specifying openmp, nestedfct, c11, c++0x, c++11-lang,
   c++11-lib, c++14-lang, c++17-lang, or gcc-c++11-lib
plus, as a double check, everything INDEX-11 showed depending on lang/gcc7.

PR:		231590

pg_similarity is an extension to support similarity queries on PostgreSQL. The
implementation is tightly integrated in the RDBMS in the sense that it defines
operators so instead of the traditional operators (= and <>) you can use ~~~
and ! (any of these operators represents a similarity function).

pg_similarity has three main components:

* Functions: a set of functions that implements similarity algorithms available
  in the literature. These functions can be used as UDFs and, will be the base
  for implementing the similarity operators;
* Operators: a set of operators defined at the top of similarity functions. They
  use similarity functions to obtain the similarity threshold and, compare its
  value to a user-defined threshold to decide if it is a match or not;
* Session Variables: a set of variables that store similarity function
  parameters. Theses variables can be defined at run time.

WWW: http://pgsimilarity.projects.pgfoundry.org

PR:		220428
Submitted by:	Jov <amutu@amutu.com>
Sponsored by:	iXsystems Inc.