Draft: contrib: rav1e: use a pregenerated rav1e-vendor package
This will require the rav1e-0.7.1-vendor.tar.bz2 file in incoming to be put in http://downloads.videolan.org/pub/contrib/rav1e/ cc @jbk @fkuehne
On top of !2667 (merged), only the last commit is new.
Edited by Steve Lhomme