Switched over to new page description variables mar, aspect, jx, and jy, and deleted the old ones.  Added a variable widthlock that is set when -width is used to modify the pen width, so that subsequent plwid() calls are ignored.
Switched over to new page description variables mar, aspect, jx, and jy,
and deleted the old ones.  Added a variable widthlock that is set when
-width is used to modify the pen width, so that subsequent plwid() calls
are ignored.

svn path=/trunk/; revision=410

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