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@

1 files changed, 1 insertions, 0 deletions

diff --git a/MOVED b/MOVED
index 839fc8e50ca1..9053450b9021 100644
--- a/MOVED
+++ b/MOVED
@@ -9469,3 +9469,4 @@ databases/py-odbc|databases/py-pyodbc|2017-07-18|Rename to comply with PyPI sche
 security/sshguard-ipfw|security/sshguard|2017-07-20|Merged with security/sshguard
 security/sshguard-pf|security/sshguard|2017-07-20|Merged with security/sshguard
 security/sshguard-null|security/sshguard|2017-07-20|Merged with security/sshguard
+audio/gstreamer1-plugins-mad|audio/gstreamer1-plugins-mpg123|2017-07-21|The GStreamer 1 mad plugin was removed, the mpg123 plugin supplies the same functionality