Colorimetric LUTs

Original mod by Tynach, revived for 1.1 All LUTs which change the white balance use chromatic adaptation to shift the colors toward a different white point. White points from the CIE's 'Illuminant series D', also known as the 'daylight locus', which is meant to represent natural daylight at different color temperatures. Luminosity is scaled roughly identically to the default LUTs. All color operations were performed in a linear light scale, then converted back into sRGB for the LUTs themselves.