Switched CMAP[01] state changes to go through API for setting number of colors, i.e. plscmap[01]n().  These functions will alloc / realloc as necessary.  Fix to tk driver bug reported by Dean Clamons.
Switched CMAP[01] state changes to go through API for setting number
of colors, i.e. plscmap[01]n().  These functions will alloc / realloc
as necessary.  Fix to tk driver bug reported by Dean Clamons.

svn path=/trunk/; revision=2671

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