cleanup: Remove expired mingw32 ports:

2023-11-20 devel/mingw32-libyaml: Last upstream release was in 2014 and mingw32
project is defunct
2023-11-20 devel/mingw32-pdcurses: Last upstream release was in 2009 and mingw32
project is defunct
2023-11-20 devel/mingw32-openssl: Upstream reached EOL and mingw32 project is
defunct
2023-11-20 devel/mingw32-pthreads: Last upstream release was in 2012 and mingw32
project is defunct
2023-11-20 devel/mingw32-directx: Last upstream release was in 2002 and mingw32
project is more or less dead
2023-11-20 math/mingw32-libgmp: Broken for more than a year
2023-11-20 devel/mingw32-libffi: Last upstream release was in 2014 and mingw32
project is defunct
2023-11-21 devel/mingw32-bin-msvcrt: Last upstream release was in 2014 and
project mingw32 is defunct
2023-11-21 devel/mingw32-zlib: Last upstream release was in 2014 and project
mingw32 is defunct
2023-11-21 devel/mingw32-gcc: Upstream release was in 2015 and mingw32 project
is defunct

devel/mingw32-libffi: Update MASTER_SITES and WWW

sources.redhat.com is defunct and there is a macro for SOURCEWARE

devel/mingw32-libffi: Mark DEPRECATED

- Upstream last release was in 2014
- WWW is vaporized
- mingw32 is defunct
- Add LICENSE MIT
- Pet portclippy
- Set EXPIRATION_DATE 2023-11-20

*: Bump PORTREVISIONs for math/mpc update to 1.3.1

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.

devel: remove 'Created by' lines

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

  *  "Waitman Gobble" <uzimac@da3m0n8t3r.com>
  *  <jkoshy@FreeBSD.org>
  *  Aaron Dalton <aaron@FreeBSD.org>
  *  Aaron Dalton <aaron@daltons.ca>
  *  Aaron H. K. Diep <ahkdiep@gmail.com>
  *  Aaron Hurt <ahurt@anbcs.com>
  *  Abel Chow <abel_chow@yahoo.com>
  *  Adam McLaurin
  *  Adam Saponara <as@php.net>
  *  Adam Weinberger <adamw@FreeBSD.org>
  *  Ade Lovett <ade@FreeBSD.org>

devel/mingw32-libffi: Add CPE information

Approved by:	portmgr (blanket)

Remove # $FreeBSD$ from Makefiles.

Return knu@'s ports to the pool after his commit bit was safekept.

Bump PORTREVISIONs of all users of math/mpc that we just updated to
version 1.1.0 (via revision 464079).

Remove ${PORTSDIR}/ from dependencies, categories d, e, f, and g.

With hat:	portmgr
Sponsored by:	Absolight

- Mark SSP_UNSAFE as it currently fails to link and needs to be investigated
  further.

With hat:	portmgr

Cleanup plist

Add USES=libtool

Remove NO_STAGE.

Update to 3.0.13.

Add NO_STAGE all over the place in preparation for the staging support (cat:
devel part 3)

Update to 3.0.12.

Man pages were erroneously installed.

Pointed out by: pointyhat
Feature safe:   yes

Add a missing build dependency: devel/mingw32-bin-msvcrt.

Pointed out by: pointyhat
Feature safe:   yes

Add mingw32-libffi, the libffi library cross-compiled for MinGW32.

Feature safe:   yes