framework: Add new USES 'magick' for graphics/ImageMagick*

A new USES has been added to depend on ImageMagick.

	USES=magick

adds a LIB_DEPENDS on graphics/ImageMagick${IMAGEMAGICK_DEFAULT}.

If a specific version is required, use for example

	USES=magick:6        resp.     USES=magick:7

If only a build, run or test is required, use for example

	USES=magick:build    resp.     USES=magick:6,build,test

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

Remove # $FreeBSD$ from Makefiles.

games: Add missing USES={gnome,gl,sdl,xorg}

Convert to UCL & cleanup pkg-message (categories e-g)

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

Change cmake default behaviour to outsource.

Ports that build out of source now simply can use "USES=cmake"
instead of "USES=cmake:outsource". Ports that fail to build
out of source now need to specify "USES=cmake:insource".

I tried to only set insource where explictely needed.

PR:		232038
Exp-run by:	antoine

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

* Fix a bug in the icon coder
* Fix a bug in configure that resulted in a string being inserted in the
Libs.private field of the pkg-config files.

Remove broken from 3 ports that where broken by the above bugs.

Reported by:	jbeich@
Obtained from:	upstream

Mark BROKEN: fails to build

convert: insufficient image data in file
`/wrkdirs/usr/ports/games/openclaw/work/OpenClaw-0.0-51-gbac7730/ClawLauncher/Resources/launcher_icon.ico'
@ error/icon.c/ReadICONImage/380.
convert: no images defined
`/wrkdirs/usr/ports/games/openclaw/work/launcher_icon_%[filename:size].png' @
error/convert.c/ConvertImageCommand/3258.

Reported by:	pkg-fallout

Update ImageMagick to 6.9.10.14 [1]

* Add PKGNAMESUFFIX and rename the directory. This was done to show
  that IM6 is not the "main" version. But still fully supported by upstream.
* Convert a number of options to optionhelpers.
* Add option for ISO/IEC 23008-12:2017 HEIF suport
* Add comment to pkg-descr explaining IM6's "legacy" tag.
* Add comment to the patch-config_policy.xml file why it still needed.

Please note that IM7 is not a drop in replacement due to library API and
command arguments changes. And as a result ports need to decide for themself
which version to use.

Chase these changes in all the ports that using IM6.

PR:		225102 (based on, only the version update) [1]
Submitted by:	Pascal Christen <pascal.christen@hostpoint.ch>

Bump PORTREVISION for ports depending on the canonical version of GCC
in the ports tree (via Mk/bsd.default-versions.mk and lang/gcc) which
has now moved from GCC 6 to GCC 7 by default.

This includes ports
 - featuring USE_GCC=yes or USE_GCC=any,
 - featuring USES=fortran,
 - using Mk/bsd.octave.mk which in turn features USES=fortran, and those
 - with USES=compiler specifying one of openmp, nestedfct, c11, c++0x,
   c++11-lib, c++11-lang, c++14-lang, c++17-lang, or gcc-c++11-lib.

PR:		222542

lang/mono: update to version 5.2.0.215 (and enhance USES=mono)

Highlights:
 - New Roslyn compiler for C# available
 - Improved support for nuget packages in USES=mono

General:
 - fix pkg-plist: mono now produces '.pdb' debug files instead of '.mdb'
 - bump all dependant ports

USES=mono:
 - properly handle caching of nuget packages
 - add support for multiple feeds for nuget packages
 - add support for nuget dependencies in a separate file
 - add support for paket packages

New port: games/openclaw: Reimplementation of Captain Claw (1997) platformer

PR:		223139
Submitted by:	Greg V <greg@unrelenting.technology>
Approved by:	tcberner (mentor)
Differential Revision:	https://reviews.freebsd.org/D13164