Update gstreamer1 to upstream release 1.20.3

PR:		261585
Reviewed by:	riggs,jbeich,tcberner

Differential Revision:	https://reviews.freebsd.org/D36850

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

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

Remove # $FreeBSD$ from Makefiles.

For well over 10 years portmgr@ have been promising to remove the
ridiculous need to bump PORTREVISION of depending ports, whenever a
dependency is updated, but here we still are...

Bump PORTREVISION for the 9 users of x265 now that it has been
upgraded from 3.2 to 3.4.

Update gstreamer1 to 1.16.2.

- The spc plugin was removed inflavor for the gsm plugin.
- Added in tree qt plugin.

Changelog: https://gstreamer.freedesktop.org/releases/1.16/#1.16.2

Update net-im/fractal to 4.2.2 to support GStreamer 1.16 (approved by
maintainer)

Thanks to antoine@ for the exp-run.

PR:		239386

multimedia/x265: update to 3.2

Changes:	https://x265.readthedocs.io/en/latest/releasenotes.html#version-3-2

multimedia/x265: update to 3.1.1

Changes:	https://x265.readthedocs.io/en/latest/releasenotes.html#version-3-1

multimedia/x265: update to 3.0

- Add SVTHEVC option, see http://x265.org/x265-svt-hevc-house/
- Drop libmd patch due to rebase churn for what little value it provides

Changes:	https://x265.readthedocs.io/en/latest/releasenotes.html#version-3-0
PR:		235906
Approved by:	maintainer timeout (2 weeks)

- Update multimedia/x265 to 2.6
- Use the distfile provided by the VideoLAN project
- Add options for HI10P and HI12P (available only for amd64)
- Add DEBUG option
- Add OPTIMIZED_CFLAGS option
- Force using clang 5.0 on 10.4. Base provided clang fails during
  compilation
- Chase shlib bump in dependent ports

PR:		225431
Submitted by:	daniel.engberg.lists@pyret.net
Approved by:	Maintainer timeout

Update GStreamer1 ports to 1.8.0.

ChangeLog: https://gstreamer.freedesktop.org/releases/1.8/

Upgrade x265 from 1.8 to 1.9. Add the test-target to utilize upstream's bundled
tests and make myself the maintainer to deal with fallout, if any.

Bump PORTREVISION of the two other ports, which depend on x265 by default.

PR:		206864

Update GStreamer1 to 1.6.2.
Update GStreamer1-vaapi to 0.7.0.

* Spell GStreamer consistently. [1]
* Fix typo in py3kplist in py3-gstreamer1 [1]
* Improve plugins COMMENTS (more improvements welcome)
* Actually include the gstreamer1-libav update this time.

PR:		204204 [1] (based on)
Submitted by:	olivierd@ [1]

multimedia/x265: update to 1.8

ABI isn't compatible, so bump PORTREVISION in consumers.

PR:		204990
Submitted by:	Anton Sayetsky <vsasjason@gmail.com>

Update gstreamer1 ports to 1.6.0.

* gstreamer1-libav now uses ffmpeg from ports.
* New ports:
  * gstreamer1-validate: Tools to detect if elements are not behaving
    as expected, mainly aimed at developers, or advanced debugging.
  * gstreamer1-rtsp-server: Base foundation for building a rtsp
    server ontop of GStreamer
 * Bunch of new plugins like: mpg123, rsvg, libde265, openh264, x265 and dtls.

Release announcement:
 
http://lists.freedesktop.org/archives/gstreamer-announce/2015-September/000357.html

Obtained from:	gnome devel repo