Convert Python ports to FLAVORS.

  Ports using USE_PYTHON=distutils are now flavored.  They will
  automatically get flavors (py27, py34, py35, py36) depending on what
  versions they support.

  There is also a USE_PYTHON=flavors for ports that do not use distutils
  but need FLAVORS to be set.  A USE_PYTHON=noflavors can be set if
  using distutils but flavors are not wanted.

  A new USE_PYTHON=optsuffix that will add PYTHON_PKGNAMESUFFIX has been
  added to cope with Python ports that did not have the Python
  PKGNAMEPREFIX but are flavored.

  USES=python now also exports a PY_FLAVOR variable that contains the

Update GStreamer 1.x suite to 1.12.3.

ChangeLog: https://gstreamer.freedesktop.org/releases/1.12/#1.12.3

Update GStreamer1 ports to 1.12.2.

Rework the adding of dependancies in Mk/bsd.gstreamer.mk.
Previous when using USE_GSTREAMER[1] it would just add the request modules to
BUILD/RUN_DEPENDS. This caused the qa script to complain because the old code
didn't implicit depend on the gstreamer1 and gstreamer1-plugins[-bad] ports for
the libraries they carried, even if they where present via the plugins! The new
code adds implicit depends on these ports so USE_GSTREAMER[1] using ports have
all the libraries included.

* The mad mp3 plugin was removed, mpg123 plugin also provides mp3 decoding.
Switch over ports that used the gstreamer1 mad plugin.
* gtksink plugin renamed -> gtk
* Hook up the sndio plugin into the framework
* Add some indirect dependacies where needed
* Reorder the plugin list in bsd.gstreamer.mk so only one plugin per line. When
changing plugins it doesn't result in multiple lines being changed.
* Remove mentions in bsd.gstreamer.mk of plugins mentions that where removed.
* Depend on libunwind on i386/amd64, GStreamer links to it if it is present.

PR:		220753
Exp-run by:	antoine@

Add more PLIST_SUB to Mk/Uses/python.mk

- Add PYTHON_PYOEXTENSION and PYTHON_SUFFIX
- Add PYTHON2 and PYTHON3
- Respect PYTHON_VERSION
- Rename PYOEXTENSION to PYTHON_PYOEXTENSION

This change would help:
- Build databases/postgresql*-plpython with Python 3
  (It has PLIST issue since bsd.python.mk to Uses/python.mk transition)
- Simplify Makefile

PR:		205807
Differential Revision:	https://reviews.FreeBSD.org/D4758
Exp-run by:	antoine

- Fix trailing whitespace in Makefiles

Approved by:	portmgr blanket

Update GStreamer1 ports to 1.8.0.

ChangeLog: https://gstreamer.freedesktop.org/releases/1.8/

multimedia/py3-gstreamer1: fix packaging with python 3.5

PR:     204519
With hat:   gnome

Update GStreamer1 to 1.6.2.
Update GStreamer1-vaapi to 0.7.0.

* Spell GStreamer consistently. [1]
* Fix typo in py3kplist in py3-gstreamer1 [1]
* Improve plugins COMMENTS (more improvements welcome)
* Actually include the gstreamer1-libav update this time.

PR:		204204 [1] (based on)
Submitted by:	olivierd@ [1]

Update Gstreamer suite to 1.6.1.

Update gstreamer1 ports to 1.6.0.

* gstreamer1-libav now uses ffmpeg from ports.
* New ports:
  * gstreamer1-validate: Tools to detect if elements are not behaving
    as expected, mainly aimed at developers, or advanced debugging.
  * gstreamer1-rtsp-server: Base foundation for building a rtsp
    server ontop of GStreamer
 * Bunch of new plugins like: mpg123, rsvg, libde265, openh264, x265 and dtls.

Release announcement:
 
http://lists.freedesktop.org/archives/gstreamer-announce/2015-September/000357.html

Obtained from:	gnome devel repo

Set PORTSCOUT on gstreamer ports

Switch default python3 version from 3.3 to 3.4.
Bump PORTREVISIONs for the affected ports.

Exp-run by:	antoine

Big Gstreamer update:

Update gstreamer, gstreamer-plugins, -good, -bad and -ugly ports to 1.4.4.
Update gstreamer1-plugins-gnonlin to 1.4.0.
Update py-gstreamer1 and py3-gstreamer1 to 1.4.0.

Add multimedia/gstreamer1-editing-services. GES is a high-level library
for facilitating the creation of audio/video non-linear editors.

Add pulseaudio plugin now that pulseaudio is updated and add the gl plugin.

Drop :keepla from USES=libtool.
Drop @dirrm[try] from plists and drop gnomehier from USE_GNOME
Switch to optionhelpers in multimedia/gstreamer1.

PR:		194922 (merged with my own WIP)
Submitted by:	olivierd

Add USES=libtool and USES=python:3

Add missing /libs in LDFLAGS, this should fix the build in some cases.

While here, remove PTHREAD_* from CPPFLAGS and LDFLAGS.

PR:		192432
Submitted by:	sascha@root-login.org (PR), troyax@pholos.eu (fix)

Add Gstreamer python bindings for Gstreamer 1.x.

Add python2 and python3 flavors.
USE_GSTREAMER1 entries will be made when I figure out how adapt
bsd.gstreamer.mk to the dual python flavors.

PR:	ports/187647 (merged/based on)
Submitted by:	Olivier Duchateau