*/*: 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

*: regular cleanup for GH_TAGNAME bad usage

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.

multimedia/mkclean: Update to 0.9.0

ChangeLog:
https://github.com/Matroska-Org/foundation-source/blob/mkclean-0.9.0/mkclean/ChangeLog.txt

PR:	262041
Reported by:	sega01@go-beyond.org

multimedia/mkclean: Add CPE information

Approved by:	portmgr (blanket)

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

Remove # $FreeBSD$ from Makefiles.

Mark as BROKEN on riscv64.

Obtained from:	lonesome.com build testing

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

multimedia/mkclean: fix linking when using base GCC

Base GCC can't link this port:
c++: Internal error: Segmentation fault (program ld)

Approved by:	mentors (implicit approval)

- Pet portlint
- Switch to USES=localbase
- Regenerate patches
- Update WWW

For ports that are marked BROKEN on armv6, and also fail to build on
armv7, mark them so.

This is part two of a multipart commit to bring armv7 ports to parity
with armv6.

Approved by:	portmgr (tier-2 blanket)
Obtained from:	lonesome.com -exp run

Previous commit should have been for armv6.

Note: the last release of this code was 2012.  Remember to take some
antacids if you try to read this code.

Approved by:	portmgr (tier-2 blanket)

Remove libiconv.so.3 compatibility link that was added in r374303 to
prevent massive PORTREVISION bumps.  Bump dependent ports that have not
been bumped since.

Mark as broken on various tier-2 archs.

While here, pet portlint.

Approved by:	portmgr (tier-2 blanket)

Convert tab after WWW: in pkg-descrs to single space as per PHB

Approved by:	portmgr blanket

Update "BSD" license in multimedia category

Convert a bunch of USE_BZIP2 to USES=tar:bzip2

Approved by:	portmgr (not really, but touches unstaged ports)

Drop maintainership

Properly support staging, take advantage of the new BROKEN_${ARCH}

Add NO_STAGE all over the place in preparation for the staging support (cat:
multimedia)

- Make ports use the libc provided iconv implementation on 10-CURRENT
  after r254273
- Fix a bunch of ports to properly work after this
- Mark converters/libiconv as IGNORE for systems with iconv in libc

Reviewed by:	bapt
Approved by:	portmgr (bapt)
Discussed with:	bapt, bsam (who both contributed ideas and code)

Convert to USES=gmake

- Convert USE_ICONV=yes to USES=iconv
- Change USE_GNOME=pkgconfig|gnomehack to USES=pathfix|pkgconfig while here

Reviewed by:	zeising

Update to 0.8.7
Cleanup the header to only keep the $FreeBSD$ line

Mark broken on sparc64.

Hat:            portmgr

- fix plist

Reported by:    pointyhat (pav)

- update to 0.8.6
- take maintainership [1]
- add license
- respect PREFIX
- remove the broken on sparc64 seems to have been fixed upstream, but I have no
way to test it
- only provide the mkclean binary, no more the testing mkvtree

Approved by:    johnson.peter@gmail.com (previous maintainer)

Mark as broken on sparc64: does not configure.

While here, remove obsolete OSVERSION check.

- remove MD5

- Mark BROKEN on 6.X: does not compile (-fvisibility=hidden)

Reported by:    pointyhat

Add mkclean 0.6.0, clean and optimize Matroska and WebM files.

PR:             ports/151679
Submitted by:   Peter Johnson <johnson.peter at gmail.com>