x11-themes/adwaita-qt6: new port - adwaita theme for Qt6

- move x11-themes/adwaita-qt to x11-themes/adwaita-qt5 for symmetry

x11-themes: remove 'Created by' lines

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

  *  Alexander Vereeken <Alexander88207@protonmail.com>
  *  Alexey Dokuchaev <danfe@FreeBSD.org>
  *  Alexey Mikhailov <karma@ez.pereslavl.ru>
  *  Babak Farrokhi <babak@farrokhi.net>
  *  David Naylor <naylor.b.david@gmail.com>
  *  Douglas Thrift <douglas@douglasthrift.net>
  *  Emanuel Haupt <ehaupt@FreeBSD.org>
  *  Eygene Ryabinkin <rea-fbsd@codelabs.ru>
  *  Filippo Natali <filippo@widestore.net>
  *  Grzegorz Blach <gblach@FreeBSD.org>
  *  Gustau Perez i Querol <gustau.perez@gmail.com>

x11-themes/adwaita-qt: update to 1.4.1

x11-themes/adwaita-qt: update to 1.4.0

Changelog:
  * Base colors are now parsed from stylesheets provided by GTK 4
    (currently GTK 4.4)
  * Added variants for HighContrast and HighContrastInverse

- Made dependency on sassc explicit

x11-themes/adwaita-qt: update to 1.3.1

Changelog:

   * Fixed wrongly advertised version
   * Fixed compatibility with older versions
   * Fixed QTabWidget issue where tabs were stretched to full width/height

x11-themes/adwaita-qt: update to 1.3.0

Remove # $FreeBSD$ from Makefiles.

x11-themes/adwaita-qt: update to 1.2.1

x11-themes/adwaita-qt: update to 1.2.0

x11-themes/adwaita-qt: update to 1.1.4

x11-themes/adwaita-qt: update to 1.1.3

x11-themes/adwaita-qt: update to 1.1.2

x11-themes/adwaita-qt: update to 1.1.1

x11-themes/adwaita-qt: update to 1.1.0

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

x11-themes/adwaita-qt: update to 1.0.91

x11-themes/adwaita-qt: update to 1.0.90

x11-themes/adwaita-qt: remove flavors (Qt4 deprecation)

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

Use regular DEPRECATED and EXPIRATION_DATE variables in an "if FLAVOR" block
instead of flavoring the variables themselves. This caused too much hassle
for Tools/scripts/rmport.

Discussed with:	tcberner

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

Mark QT4 ports/functionality for removal on 2019-03-15

While here, chase some KDE4 ports and functionality, these are scheduled for
removal on 2018-12-31. Change the default option/flavor to QT5 where applicable
or use alternative toolkits like GTK.

Submitted by:	tcberner
Reviewed by:	adridg, jhale, rene, tcberner
Approved by:	portmgr (implicit, flavor hook)
Differential Revision:	https://reviews.freebsd.org/D17741

Bump PORTREVISION for ports depending on the canonical version of GCC
in the ports tree (via Mk/bsd.default-versions.mk and lang/gcc) which
has now moved from GCC 6 to GCC 7 by default.

This includes ports
 - featuring USE_GCC=yes or USE_GCC=any,
 - featuring USES=fortran,
 - using Mk/bsd.octave.mk which in turn features USES=fortran, and those
 - with USES=compiler specifying one of openmp, nestedfct, c11, c++0x,
   c++11-lib, c++11-lang, c++14-lang, c++17-lang, or gcc-c++11-lib.

PR:		222542

Replace bsd.qt.mk by Uses/qt.mk and Uses/qt-dist.mk

From now on, ports that depend on Qt4 will have to set
	USES=		qt:4
	USE_QT=		foo bar
ports depending on Qt5 will use
	USES=		qt:5
	USE_QT=		foo bar

PR:		229225
Exp-run by:	antoine
Reviewed by:	mat
Approved by:	portmgr (antoine)
Differential Revision:	-https://reviews.freebsd.org/D15540

x11-themes/adwaita-qt[45] move to a flavored version

* x11-themes/adwaita-qt4 -> adwaita-qt@qt4
* x11-themes/adwaita-qt5 -> adwaita-qt@qt5
* x11-themes/adwaita-common -> gone.

Approved by:	portmgr (mat)
Differential Revision:	https://reviews.freebsd.org/D15228