graphics/gstreamer1-plugins-qt

multimedia/gstreamer1: Update to 1.24.8

Mk/Uses/gstreamer.mk:
- Sort, fix whitespace issues and typos
- Promote several common variables to improve maintainer QOL
*   There's now no need to set manually set PORTVERSION nor
    SOVERSION in several Makefiles
*   This will help to prevent not updating some components
*   A note has been added, however, to remind maintainers
    to remake distinfo for certain ports
- Improve documentation

multimedia/gstreamer1-plugins-webrtc:
- New port split from multimedia/gstreamer1-plugins-bad
- multimedia/gstreamer1-plugins-rust has been updated
  to reflect this change

net/gstreamer1-plugins-sctp:
- New port split from multimedia/gstreamer1-plugins-bad

x11-toolkits/gstreamer1-plugins-qt5:
- Moved here from graphics/gstreamer1-plugins-qt to
  align with its new Qt6 counterpart

x11-toolkits/gstreamer1-plugins-qt6:
- New port: GStreamer Qt6 QML videosink plugin

*/*:
- Improve Makefile order and formatting
- Sorry for the repo churn, but not fixing this would just lead to more
  poorly formatted gstreamer ports in the future via copypasta

https://gstreamer.freedesktop.org/releases/1.24/#1.24.8

PR:		278914
Reported by:	vvd

multimedia/gstreamer1*: Update to upstream release 1.22.10

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.

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