Get rid of nasty warnings when building docs
Get rid of nasty warnings when building docs

Added a SCANGOBJ_OPTIONS in the Makefile.am so gst_init is
executed before using gstreamer in the gupnp-dlna-scan.

luisbg/gupnp-dlna,luisbg/gupnp-dlna,GNOME/gupnp-dlna,GNOME/gupnp-dlna,GNOME/gupnp-dlna