[AD] minor patches

[Elias Pschernig <elias@xxxxxxxxxx>]

I committed a patch to remove an ASSERT for hsv_to_rgb, since there is
extra code to find the angle in the 0..360 range if it is not after the
ASSERT, so it's clearly not needed.

And another patch to update the version to 4.3.0 for new_api_branch, so
programs compiled against 4.2.0 keep working.

-- 
Elias Pschernig