[x264] (7 commits) ...Merge branch 'f29' into f30

Summary of changes: 4a04df0... Fix opencl dlopen (rfbz#5185) (*) fda3c03... Enable opencl (which is default) only exist --disable-openc (*) 808c02f... Build /usr/bin/x264 with gpac shared lib instead static lib (*) a5fc59d... Revert "Build /usr/bin/x264 with gpac shared lib instead st (*) 7e32722... don't overwrite generic headers with 10bit on simdarch (rfb (*) c696e2a... whitespace cosmetics: replace tabs with spaces (*) ddf980a... Merge branch 'f29' into f30 (*) (*) This commit already existed in another branch; no separate mail sent