multimedia/{py-,}mlt{-qt5,}: rename to multimedia/{py-,}mlt6{-qt5,}:

- To make it possible to easily import mlt-7 move the current port to
  a versioned directory.

- Add Mk/Uses/mlt.mk to make it easily possible to depend on a given mlt
  version:

  	USES=mlt:6

  will get you a dependency on multimedia/mlt6, while

	USES=mlt:7

  will get you a dependency on the soon to be added multimedia/mlt7

- Switch the port to use cmake as a build system
- While here, provide some more options to make it possible to have
  a leaner package if required

- Bump consumers after rename of the dependency

multimedia/mlt[-qt5]: update to last 6-series release

We missed a couple of 6-series releases, so jump from 6.22
straight to 6.26.1, which is the last of the 6-series.
Release notes are at:
	https://www.mltframework.org/

VDPAU support was removed -- ports had an option for it,
which was disabled and now the option is removed as well.

The 7-series introduces API breaks, so that update will
be more involved.

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

Remove # $FreeBSD$ from Makefiles.

- Upgrade math/eigen3 to 3.3.8;

- Add some dependencies which might be detected by Find_Package but not
registered;

- Bump PORTREVISION of consumers.

PR:		250833
Submitted by:	/me
Approved by:	tcberner@ (KDE / maintainer) + exp-run

Add USES=xorg USES=gl, ports categories m

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

Clean up final leftovers from Qt4.

Submitted by:	rene
Reviewed by:	mat, tcberner
Differential Revision:	https://reviews.freebsd.org/D20725

multimedia/mlt: update to 6.14.0

Changelog:
	https://www.mltframework.org/blog/v6.14.0_released/

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

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

Update multimedia/mlt to 6.6.0

PR:		227842
Approved by:	avilla (maintainer timeout)
Differential Revision:	https://reviews.freebsd.org/D15226

Unbreak multimedia/mlt* after 457914

Removing eigen as a run-depend in graphics/movit makes mlt fail to build.
Add eigen as a build-depend to mlt*.

Pointy hat:	tcberner
Reported by:	antoine

Chase ffmpeg 3.3 update (ABI changes)

PR:		218658
Submitted by:	riggs

Update Qt5 to 5.7.1, and unify the Qt4 and Qt5 ports some more

* Update Qt5 to 5.7.1
* Move Qt4 binaries to lib/qt4/bin
* Move Qt5 libraries to lib/qt5/lib
  By moving the libraries we should finally be able to get rid of the inplace
  upgrade bug (see ports bugs 194088, 195105 and 198720):  when Qt5's libraries
  were lying in /usr/local/lib, which would often get added by pkgconfig to the
  linker paths via dependencies, the already installed libraries were linked
  against, instead of the ones that were being built. This forced us to make
  sure, that -L${WRKSRC}/lib was always coming before -L/usr/local/lib in the
  linker flags. With this change this should no longer be the case.
* Rename some ports to match the rest (foo-qtX -> qtX-foo)
* Depend on new port misc/qtchooser [see UPDATING & CHANGES]

There are several new Qt5 ports which all have been created by Marie Loise
Nolden
<nolden@kde.org>. Thanks again.

PR:		216797
Exp-Run by:	antoine
Reviewed by:	rakuco, mat, groot_kde.org
Approved by:	rakuco (mentor)
Differential Revision:	https://reviews.freebsd.org/D9213

- Split MLT Qt plugins into their own ports [1]
- Cleanup the Python slave port [2]
- Bump PORTREVISION.

[1] Ports can now force the dependency on Qt plugin, which is needed
    by Kdenlive. Having two different (conflicting) versions will help
    with the transition to the KF5-dependent Kdenlive.

[2] Creating slave ports for other SWIG bindings should now be easy.