Fix utf-8 coding problem and off-by-one error in tcl version of example  26. Results now identical to C version.
Fix utf-8 coding problem and off-by-one error in tcl version of example 
26. Results now identical to C version.


svn path=/trunk/; revision=8675

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