Mouse event handler added, also escape function support for the PLESC_EXPOSE, PLESC_RESIZE, PLESC_REDRAW, PLESC_EH commands (contributed by Radey Shouman).  Device-specific data typedef moved into plplotTK.h to allow access by determined users.  nopause handling moved back into here where it belongs.  Byte count no longer kept track of here in favor of doing it in the PDF write routines.
Mouse event handler added, also escape function support for the
PLESC_EXPOSE, PLESC_RESIZE, PLESC_REDRAW, PLESC_EH commands (contributed
by Radey Shouman).  Device-specific data typedef moved into plplotTK.h
to allow access by determined users.  nopause handling moved back into
here where it belongs.  Byte count no longer kept track of here in favor
of doing it in the PDF write routines.

svn path=/trunk/; revision=780

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