* commit 'aa37d2bf4505afc106e2a23c44afc722bb204a8e':
swscale: Kill non-compiling disabled cruft
The isGray() chunk is not merged as an alternative patch actually fixing
the dead code is currently under review on the mailing-list.
The SWS_X chunk is merged, with an additional cosmetic.
Merged-by: Clément Bœsch <u@pkh.me>