multimedia/*phonon*: update and flavorize with @qt4/@qt5

Approved by:	portmgr (mat)
Differential Revision:	https://reviews.freebsd.org/D14632

multimedia/qt5-phonon4* readd/bump PORTREVISION

* Due to a bad sed /d call qt5-phonon4 ports lost their PORTREVISIONS, readd and
bump them.

Reported by:	VVD (in IRC)

Update the Qt5 ports to 5.10.1.

The work was done by tcberner and myself, with thanks to antoine for the
exp-run.

Not a lot to report compared to other Qt5 updates:
* net/qt5-network is still broken with LibreSSL. I said this in a commit
  message ages ago but it bears repeating: upstream is open to adding support
  for LibreSSL, but someone needs to step up to maintain it upstream, otherwise
  things will continue to be broken all the time.
* www/qt5-webengine is a huge monster that is terrible to update, just like
  www/chromium itself is. We (kde@) have decided to keep using the 5.9 series
  for the time being, as it should be compatible with the rest of Qt anyway. It
  was updated to 5.9.5, the latest 5.9 release at the time of writing.

PR:		228213

Revision bump of all ports with USE_GL after consolidation of mesa-libs

Approved by:	swills (mentor)
Differential Revision:	https://reviews.freebsd.org/D10845

Importing KDE Frameworks into the ports tree (required for newer KDE Desktop and
Applications)

KDE Frameworks is a collection of libraries and software frameworks by KDE
that serve as technological foundation for KDE Plasma 5 and KDE Applications
distributed under the GNU Lesser General Public License (LGPL) [1].

The work is based on what we have in the KDE testing repo [2].

This is the next big step in updating the KDE Desktop and its Applications
to anything less dusty.

With this change, `USES=kde:5` is now a valid option. Ports that need to depend
on KDE Framework can now set:
	USES=kde:5
	USE_KDE=<framework1> <framework2> ... <frameworkX>

Switch to an out-of-source CMake build.

Fix build of multimedia/qt5-phonon-gstreamer

In r421340 there was an unfortunate mistake when realphabetizing the USE_QT5
components, and 'phonon4' became a 'phonon'.

Approved by:	rakuco (mentor)
MFH:		2016Q4

Update Phonon to 4.9.0.

Release notes:
- https://community.kde.org/Phonon/Releases/Core/4.9.0
- https://community.kde.org/Phonon/Releases/GStreamer/4.9.0
- https://community.kde.org/Phonon/Releases/VLC/0.9.0

This release fixes the build with the upcoming Qt 5.6, which was failing like
this:

    /usr/bin/c++   -O2 -pipe -fstack-protector -fno-strict-aliasing
-Wnon-virtual-dtor -Wno-long-long -Wundef -Wcast-align -Wchar-subscripts -Wall
-W -Wpointer-arith -Wformat-security -Woverloaded-virtual -fno-common
-fvisibility=hidden -Werror=return-type -fvisibility-inlines-hidden
-Wno-return-type-c-linkage    
CMakeFiles/cmTC_08ed6.dir/check_qt_visibility.cpp.o  -o cmTC_08ed6
   
CMakeFiles/cmTC_08ed6.dir/check_qt_visibility.cpp.o:(.qtversion[qt_version_tag]+0x0):
undefined reference to `qt_version_tag'

Most of the work was done by tcberner@.

PR:		211916

Remove ${PORTSDIR}/ from dependencies, categories m, n, o, and p.

With hat:	portmgr
Sponsored by:	Absolight

Fix build with GStreamer 1.6.0.

- Add ports for Qt 5 variety of Phonon 4
- Introduce new USE_QT5 component: phonon4

Based on patches submitted by Tobias C.Berner <tcberner@gmail.com>
via kde-freebsd maillist:
https://mail.kde.org/pipermail/kde-freebsd/2015-January/018741.html