vuplus dvbmediasink update

compensate for dream updates.
Add config file and transcoding options.

From the streamproxy commit:

Add various encoding options, they can be set as default using
command line parameters, but also introduce a config file
(/etc/enigma2/streamproxy.conf) that holds default values for
encoding parameters. Besides that, the parameters can be
adjusted on a per-stream basis using url parameters.

Options:
-f [ --foreground ]   run in foreground (don't become a daemon)
-g [ --group ] arg    require streaming users to be member of this group
-l [ --listen ] arg   listen to tcp port with default action
-s [ --size ] arg     default transcoding frame size (480p (default), 576p or 720p)
-b [ --bitrate ] arg  default transcoding bit rate (100 - 10000 kbps)(default 1000)
-P [ --profile ] arg  default transcoding h264 profile (baseline (default), main, high)
-L [ --level ] arg    default transcoding h264 level (3.1 (default), 3.2, 4.0)
-B [ --bframes ] arg  default transcoding h264 b frames (0 (default), 1 or 2)

Config file:
listen = 8002:transcode
listen = 8003:transcode
size = 480p
bitrate = 1000
profile = baseline
level = 3.1
bframes = 0

Url:
http://..?..&size=480p
http://..?..&bitrate=1000
http://..?..&profile=baseline
http://..?..&level=3.1
http://..?..&bframes=0

Please note that these are the only properties/values safe to use. All other
values will make the transcoding engine crash. Streamproxy will therefore
not honour other values than advertised in the usage message.
Merge branch 'master' of git://git.code.sf.net/p/openpli/openpli-oe-core