Split off some stuff into the new file plplotTK.h, and made some function name changes to help keep the namespace consistent.
Split off some stuff into the new file plplotTK.h, and made some function
name changes to help keep the namespace consistent.

svn path=/trunk/; revision=775

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