Moved color and color map handling functions into plctrl.c. Changed file open routine to support new options for sequencing family member files.
Moved color and color map handling functions into plctrl.c.
Changed file open routine to support new options for sequencing family
member files.

svn path=/trunk/; revision=739

FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot