Use the -bopcmd and -eopcmd configuration commands when in native Tk mode to install bop and eop handlers, respectively.  Previously these commands were just used in Tk driver mode.
Use the -bopcmd and -eopcmd configuration commands when in native Tk mode
to install bop and eop handlers, respectively.  Previously these commands
were just used in Tk driver mode.

svn path=/trunk/; revision=3556

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