* Trying to align LUA options with radio/src/CMakeLists.txt -DLUA=NO: no Lua of any kind -DLUA=ON: everything but mixer scripts -DLUA=YES: also mixer scripts * Color LCD with -DLUA=NO is probably a rare combination, so it needed a little help with #defines. * Some strange error using floor function w/o <math> - probably because -DLUA=NO is not normally used w/ color.