[OE-core] Request for moving Orc to OE-core

[Carlos Rafael Giani]

As preparation for upgrading the gstreamer1.0 recipes to 1.2 , I would 
propose to move Orc into OE-core.
Without Orc, key elements of GStreamer (audioconvert, audioresample, 
videoconvert, videoscale ..) are much slower.
Currently Orc is in meta-oe . Its recipe uses the most recent version 
(0.4.18), which is the minimum Orc version that works with GStreamer 
1.2. If Orc is in oe-core, it can be added to the 
gstreamer1.0-plugins-base/good/bad/ugly recipes' default PACKAGECONFIG 
lists.

Thanks,
   Carlos