Suppress color mode in GMT palette output
Suppress color mode in GMT palette output

- By default, do not print "# COLOR_MODE = rgb|hsv" unless -mode
  is specified on command line. This avoids multiple pipes to
  merge multiple color palettes. Probably will have to go back
  through many scripts to fix this...

mherman09/Hdef,mherman09/Hdef,mherman09/Hdef