x11-wm: remove 'Created by' lines

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

  *  Adam Weinberger
  *  Alejandro Pulver <alepulver@FreeBSD.org>
  *  Alexey Dokuchaev <danfe@FreeBSD.org>
  *  Alexey Dokuchaev <danfe@regency.nsu.ru>
  *  Andreas Kohn <andreas@syndrom23.de>
  *  Anton Tornqvist <antont@inbox.lv>
  *  Aragon Gouveia <aragon@phat.za.net>
  *  Babak Farrokhi <babak@farrokhi.net>
  *  Brett Taylor <brett@peloton.physics.montana.edu>
  *  Brian Handy <handy@physics.montana.edu>
  *  Bruce A. Mah <bmah@ca.sandia.gov>

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

x11-wm/obconf-qt: Update to 0.16.1

Remove # $FreeBSD$ from Makefiles.

x11-wm/obconf-qt Update to 0.16.0

Prefer graphics/ligvrsvg2-rust over graphics/librsvg2

- switch to the more modern version of librsvg2 on architectures
  supporting rust
- this will fix some graphical issues on these architectures

PR:		250276
Exp-run by:	antoine
Submitted by:	tobik
Differential Revision:	https://reviews.freebsd.org/D18878

Upgrade to 0.15.0

Update LXQt to 0.14.1

Update devel/libqtxdg to 3.4.0
Update x11/lxqt-globalkeys to 0.14.3

Official announcement https://forum.lxqt.org/t/release-lxqt-0-14-1/648

PR: 239427
Approved by: swills (mentor) mbeis@xs4all.nl (maintainer)
Differential Revision: https://reviews.freebsd.org/D21056

Add USES=xorg USES=gl, ports categories x

Add USES=xorg and USES=gl to ports in categories starting with 'x'
While here, try to sprinkle other USES (mostly gnome and sdl) as needed.

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

Upgrade the LXQt desktop environment to 0.14.0
Upstream announcement https://forum.lxqt.org/t/release-lxqt-0-14-0/572

Approved by: miwi (mentor)
Differential Revision: https://reviews.freebsd.org/D19056

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

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

New port x11-wm/obconf-qt

PR: 229306
Approved by: swills (mentor)
Differential Revision: https://reviews.freebsd.org/D17261