[x265] Poor Development Practices

[Derek Buitenhuis]

So.

https://bitbucket.org/multicoreware/x265/commits/b1f5fd61883a0f375bbb5012fc41a5661c0b9389

This introduced an API change with NO version bump.

People complained stuff no longer builds.

https://bitbucket.org/multicoreware/x265/commits/ce96cdb390fe26aee6effa731e51303c1d9056b0

"Fixed" it in the worst possible way.

It is not OK to re-purpose things like this, silently. It means code will keep
compiling, but do the wrong thing.

So please, bump the X265_BUILD number next time and no silently change
behavior in the background, which was previously correct. It's not
amateur hour.

Thanks,
- Derek