
Much better handling of return values for arguments with *_p_output
types.  I am using swig's $arg automatic variable now.  (RTFM is always
helpful.)

svn path=/trunk/; revision=2767

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