Changed _clear/_page driver functions to the names _eop/_bop, to be more representative of what's actually going on.  Users still use plpage/plclr.
Changed _clear/_page driver functions to the names _eop/_bop, to be
more representative of what's actually going on.  Users still use
plpage/plclr.

svn path=/trunk/; revision=203

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