[Ohrrpgce] SVN: teeemcee/9742 Switch nearcolor() to a weighted RGB distance formula, from https://www.

[subversion at HamsterRepublic.com]

teeemcee
2017-11-25 05:30:02 -0800 (Sat, 25 Nov 2017)
440
Switch nearcolor() to a weighted RGB distance formula, from https://www.compuphase.com/cmetric.htm

After trying it out, it only rarely makes better choices. It's remarkable
how little overlap there is between the Vikings palette and the old OHR one,
so there always are a lot of mismatches...
When I did experiments with dithering before, I found that many dithering
algorithms also do surprisingly badly for mapping between those palettes
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U   wip/allmodex.bas