[Ohrrpgce] SVN: teeemcee/8785 Raise map layer limit from 8 to 16

[subversion at HamsterRepublic.com]

teeemcee
2017-05-31 05:17:27 -0700 (Wed, 31 May 2017)
105
Raise map layer limit from 8 to 16

(Also, trivial: fixed gamma correction when exporting a map as a bmp)
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U   wip/common.rbas
U   wip/const.bi
U   wip/docs/plotdict.xml
U   wip/loading.rbas
U   wip/mapsubs.bas
U   wip/ohrhelp/mapedit_layers.txt
U   wip/plotscr.hsd
U   wip/slices.bas
U   wip/slices.bi
U   wip/udts.bi
U   wip/whatsnew.txt