[x264/el8] (9 commits) ...Bootstrap to fix arm builds

Summary of changes: 66e12e4... - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass (*) 6c6c507... Update to 0.157 (stable branch) Rebase patches (*) 3206971... Do the forgotten bootstrap build (*) 6c49d5d... Disable bootstrap build (*) 61df541... Fix opencl dlopen (rfbz#5185) (*) 0136d44... Update changelog (*) cbc6959... Enable opencl (which is default) only exist --disable-openc (*) 67dda12... Build /usr/bin/x264 with gpac shared lib instead static lib (*) c851a91... Bootstrap to fix arm builds (*) (*) This commit already existed in another branch; no separate mail sent