MAN?PREFIX: eleminate its usage  and move man to share/man

*/*: Sunset 12.4-RELEASE/12-STABLE from ports tree

- Remove all references to defunct ARCH arm
- Remove all references to defunct ARCH sparc64
- Remove x11-drivers/xf86-video-sunffb which requires defunct sparc64
  ARCH
- Remove sysutils/afbinit requires defunct sparc64 ARCH
- Remove all references to bktr driver
- Remove all references to defunct FreeBSD_12
- Remove all references to OSVERSION/OSREL corresponding to 12
- Remove conditionals in Mk/Uses/cabal.mk
- Remove sparc reference from Mk/Uses/qt-dist.mk
- Remove BROKEN_sparc64/NOT_FOR_ARCH=sparc64
- Remove BROKEN_FreeBSD_12* from:
- Remove OpenSSL patches from:
- Remove conditional flags for OSVERSION >= 1300000 to fixed flags.
  Also move conditional flags for non sparc64/arm ARCH to fixed flags.

Reviewed by:	brooks, jbeich, rene, salvadore
Differential Revision: https://reviews.freebsd.org/D42068

Cleanup: drop redundant DESTDIR propagation via MAKE_{ARGS,ENV}

Our framework usually DTRT; sometimes it's necessary to pass it
explicitly, e.g. for ports with USES+=qmake or which use exotic
build systems, but these are mostly staging dawn and apparently
debug leftovers, so remove them to not confuse the reader.

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.

sysutils/mtm: Fix build on older releases

sysutils/mtm: Update to 1.2.1

Changes:	https://github.com/deadpixi/mtm/releases/tag/1.2.1

One more small cleanup, forgotten yesterday.
Reported by:	lwhsu

Remove # $FreeBSD$ from Makefiles.

Let mtm use ncurses from the base system on recent CURRENT

Also, update manual page installation path.

PR:		250227
Submitted by:	swills

Update to 1.2.0

Changelog:
https://github.com/deadpixi/mtm/releases/tag/1.2.0

Update to 1.1.0

Reported by:	portscout
Event:		EuroBSDcon 2019 Hackathon

sysutils/mtm: Fix building on 11.2 amd64

/usr/bin/ld: undefined reference to symbol `intrflush' (try adding -ltinfow)
/usr/local/lib/libtinfow.so: could not read symbols: Bad value

Reported by:	pkg-fallout

sysutils/mtm: Fix a typo in COMMENT

Reported by:	kai

sysutils/mtm: Update to 1.0.1

Reported by:	Repology

Add gnu99 to USE_CSTD to fix builds on gcc-based archs.

Tested on powerpc64, amd64.

Approved by:	portmgr (tier-2 blanket)

Add sysutils/mtm:

mtm is the Micro Terminal Multiplexer, a terminal multiplexer.

It has four major features/princples:
 - Simplicity: there are three commands (change focus, split, close). There are
   no modes, no dozens of commands, no crazy feature list.
 - Compatibility: mtm emulates a classic ANSI text terminal. That means it
   should work out of the box on essentially all terminfo/termcap-based systems
   (even pretty old ones), without needing to install a new termcap entry.
 - Size mtm is small. The entire project is around 1000 lines of code.
 - Stability: mtm is "finished" as it is now. You don't need to worry about it
   changing on you unexpectedly. The only changes that can happen at this point
   are:
    - Bug fixes.
    - Translation improvements.
    - Accessibility improvements.
    - Fixes to keep it working on modern OSes.

WWW: https://github.com/deadpixi/mtm

PR:		228152
Submitted by:	0mp@FreeBSD.org
Reviewed by:	tobik