Use polylines for font drawing. ~30-40% faster on some demos.
Use polylines for font drawing. ~30-40% faster on some demos.

svn path=/trunk/; revision=2810

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