*: Bump revision of ports using math/Imath

...after its major revision update.

Mk/Uses/magick.mk: Bump all consumers

Bump all consumers of ImageMagick ports after flavorizing them.

Approved by:	tcberner (mentor, implicit)

*/*: Bump all users of multimedia/ffmpeg*

...to make sure all picks up new version(s)

graphics/synfig*: Define later versions of deps and fix build with FFmpeg 6

- Bump MLT and ImageMagick dependencies to 7
- Import patch from Debian to fix build FFmpeg 6 (synfig only)
- Rework ports to better follow Porters Handbook

PR:		270701
Approved by:	portmgr (maintainer timeout, 2+ weeks)

audio/opus: bump consumers after update to 1.4

*: Bump PORTREVISIONs for math/mpc update to 1.3.1

*: Bump PORTREVISION of math/Imath users

graphics/synfig: upgrade 1.4.2 --> 1.4.4

ChangeLog: https://github.com/synfig/synfig/blob/master/ChangeLog.md

PR:		268804
Reported by:	portmaster@bsdforge.com (maintainer)

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.

*/*: bump all consumers after recent boost upgrade

graphics: remove 'Created by' lines

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

  *  "Waitman Gobble" <uzimac@da3m0n8t3r.com>
  *  Aaron Dalton <aaron@FreeBSD.org>
  *  Abel Chow <ozsanh45vds001@sneakemail.com>
  *  Adam Weinberger <adamw@FreeBSD.org>
  *  Ade Lovett <ade@FreeBSD.org>
  *  Ade Lovett <ade@lovett.com>
  *  Akinori MUSHA aka knu <knu@idaemons.org>
  *  Aldis Berjoza <aldis@bsdroot.lv>
  *  Alex Hayward <xelah@xelah.com>
  *  Alex Ivasyuv <siegerstein@pochta.ru>
  *  Alex Samorukov <samm@os2.kiev.ua>

devel/boost-all: bump all library consumers after boost upgrade

PR:	246106

graphics/synfig: Update to 1.4.2

PR:	263461

textproc/libxml2: bump all LIB_DEPENDS consumers

This is a separate commit to facilitate easier cherry-picking for
quarterly.

PR: 262853, 262940, 262877, 263126
Approved by: fluffy (mentor)

textproc/libxml2: bump all dependencies

This should make sure that all dependent ports will pick
up the new version commited with a13ec21cd733f67a9fc0dc00ab45268bdc236246

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

*: graphics/openexr PORTREVISION bumps

OpenEXR changes its SONAME again, so bump PORTREVISION of its users.

multimedia/{py-,}mlt{-qt5,}: rename to multimedia/{py-,}mlt6{-qt5,}:

- To make it possible to easily import mlt-7 move the current port to
  a versioned directory.

- Add Mk/Uses/mlt.mk to make it easily possible to depend on a given mlt
  version:

  	USES=mlt:6

  will get you a dependency on multimedia/mlt6, while

	USES=mlt:7

  will get you a dependency on the soon to be added multimedia/mlt7

- Switch the port to use cmake as a build system
- While here, provide some more options to make it possible to have
  a leaner package if required

- Bump consumers after rename of the dependency

*: bump PORTREVISION after math/Imath update

graphics/synfig*: re-categorize, hand-off MAINTAINER

Chris writes (in the PR mentioned below):

	I need to use Synfig. It appears to be in the
	wrong category (devel), should be graphics. As it is
	an image manipulation application. I also see it's WAY
	out of date.

	This pr changes devel/synfig to graphics/synfig. As I
	also seek to update this port and graphics/synfigstudio;
	takes MAINTAINER.

apply the patch, massaging it to maintain INDEX &c. Hands off
maintainership (from ports@).

PR:		257030
Reported by:	Chris Hutchinson