Organizing ffmpeg prerequisites
kaltura-libmcrypt rightfully places itself under the /opt/kaltura, therefore, pass configure shared,/opt/kaltura and set LDFLAGS to include /opt/kaltura/lib.
use our kaltura-libmemcached-devel and not memcached-devel and pass /opt/kaltura as path.
Removed libass
Removed kaltura-libass
Merge branch 'Jupiter-10.0.0-media-server' of https://github.com/kaltura/platform-install-packages into Jupiter-10.0.0-media-server

Conflicts:
	RPM/SPECS/kaltura-ffmpeg.spec
	RPM/scripts/build/package.sh
	RPM/scripts/build/package_ffmpeg_source.sh