libraries/gstreamer1: Include orc as a dependency
libraries/gstreamer1: Include orc as a dependency

It's not strictly required, but gstreamer and *all* of the
plugin packs strongly recommend it, as the codepaths used
without it will be slower.  User experience should be more
pleasing with this small library, so we'll hard-require it.
Of course, a user is still welcome to build without it if
they notice the cheat :-)

Signed-off-by: Robby Workman <2f5326e16de92cfeea9ded47a50f5e7144bd5a01@slackbuilds.org>

panosmdma/SlackOnly-SlackBuilds,panosmdma/SlackOnly-SlackBuilds,panosmdma/SlackOnly-SlackBuilds,panosmdma/SlackOnly-SlackBuilds,panosmdma/SlackOnly-SlackBuilds,panosmdma/SlackOnly-SlackBuilds,panosmdma/SlackOnly-SlackBuilds