Fix to previous commit to deprecate plarrows. This broke plarrows  support for octave. The higher level arrows function still uses  plarrows and so this also broke example p9 and caused ctest to fail. 
Fix to previous commit to deprecate plarrows. This broke plarrows 
support for octave. The higher level arrows function still uses 
plarrows and so this also broke example p9 and caused ctest to fail. 


svn path=/trunk/; revision=8277

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