[Cin] lcms2

Just found out lcms2 has fast mode since last summer.. https://github.com/mm2/Little-CMS/releases LittleCMS 2.10 lcms2.10 2021357 Compare @mm2 mm2 released this on 5 Jun 2020 Change Log: Added a compilation toggle to remove "register" keyword in API. Previously commercial, fast_float plug-in is now released as open source under GPL3 license. === Little CMS floating point plug-in accelerates 8 bit and floating point color transforms, and adds some other features: Adds support for internal Photoshop 1.15 fixed point format Adds a new formatter to obtain dither on 8 bit for certain color spaces (Gray, RGB and CMYK) == https://www.littlecms.com/plugin/ should be buildable via configure switch (?) since 2.12 release last February..