plcont and plshade now have long, complex argument lists.  Moreover, since they support defaulting of arguments, not all args even have to be specified.  So we convert to using the [incr Tcl] args metaphor so that we don't have to worry about exactly how these shadow methods were called.  Note that this object needs major fleshing out now that the entire Tcl API is implemented.
plcont and plshade now have long, complex argument lists.  Moreover,
since they support defaulting of arguments, not all args even have to
be specified.  So we convert to using the [incr Tcl] args metaphor so
that we don't have to worry about exactly how these shadow methods
were called.  Note that this object needs major fleshing out now that
the entire Tcl API is implemented.

svn path=/trunk/; revision=1802

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