audio/kid3: Update to 3.9.2; flavorize

Convert to FLAVORS with qt5 set as the default
- audio/kid3-qt5 -> audio/kid3@qt5
- audio/kid3-kf5 -> audio/kid3@kf5
- Add Qt6 flavor audio/kid3@qt6

Mk/Uses: always use colon for build/run suffix

Most USES use a colon for build/run(/test) suffixes. Change kde.mk,
qt.mk and pyqt.mk to do the same, and update all ports using that.

Document in CHANGES.

PR:			266034
Exp-run by:		antoine
Approved by:		tcberner (mentor)
Differential Revision:	https://reviews.freebsd.org/D36349

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.

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

audio/kid3-*: Update to 3.9.1

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

Remove # $FreeBSD$ from Makefiles.

audio/kid3-*: Update to 3.8.6

audio/kid3-*: Update to 3.8.5

audio/kid3*: Switch to the smaller tar.xz distfile from the KDE mirrors.
There is no change in the content between this and the tar.gz distfile from
Sourceforge, so no need to rebuild.

Update WWW which was redirecting.

MFH:		2021Q1

audio/kid3-*: Update to 3.8.4

audio/kid3-*: Update to 3.8.3

Chase multimedia/mp4v2 update; bump PORTREVISIONS of dependent ports

PR:		212785

multimedia/ffmpeg: update to 4.2

Changes:	https://git.ffmpeg.org/gitweb/ffmpeg.git/blob/n4.2:/Changelog
ABI:		https://abi-laboratory.pro/tracker/timeline/ffmpeg/

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

Update devel/readline to 8.0

- Bump PORTREVISION of dependent ports for shlib change

Changes:	https://tiswww.case.edu/php/chet/readline/CHANGES
PR:		236156
Exp-run by:	antoine

audio/kid3-*: Update to 3.7.1

audio/kid3-*: Update to 3.7.0

- Clean up Makefile after removal of kde4 and qt4 variants
- Remove PHONON option which was only for the qt4 variant
- Further simplify substitutions in pkg-plist

Fix Qt5 symbol version scripts to put the catch-all clause first.  When
a symbol matches multiple clauses the last one takes precedence.  If the
catch-all is last it captures everything.  In the case of Qt5 libraries
this caused all symbols to have a Qt_5 label while some should have
Qt_5_PRIVATE_API.  This only affects lld because GNU ld always gives the
catch-all lowest priority.

Older versions of Qt5Webengine exported some memory allocation symbols from
the bundled Chromium.  Version 5.9 stopped exporting these [1] but the
symbols were kept as weak wrappers for the standard allocation functions to
maintain binary compatibility. [2][3]  The problem is that the call to the
standard function in these weak wrappers is only resolved to the standard
function if there's a call to this standard function in other parts of
Qt5Webengine, because only then is there a non-weak symbol that takes
precedence over the weak one.  If there's no such non-weak symbol the call

audio/kid3-qt5: remove KDE4 plist entries after r488807

Reported by:	antoine
MFH:		2019Q1

Update audio/kid3-qt5 to be the new master port for audio/kid3-kf5 and itself.

Update to 3.6.1
Add KDE Frameworks 5 (KF5) support and slave port
Add regression tests and remove Qt testlib as a hard dependency
Make COMMENT more generic since kid3 can tag many different types of files
Improve pkg-descr and update WWW

audio/kid3-kde4:
- Update to 3.2.1
- Remove QML option, which is mainly intended for developers
- Remove incorrect BROKEN on 9-i386, the actual bug was in Qt ports (PR 198738)

- Mark BROKEN on 9.x i386: gcc coredump

Submitted by:	pkg-fallout
Approved by:	portmgr blanket

Add audio/kid3-qt5: Qt 5 version of kid3