Added typedef of PDFstrm and wrapped function prototypes in a macro so the header can be read without problems by K&R compilers (cc).
Added typedef of PDFstrm and wrapped function prototypes in a macro so
the header can be read without problems by K&R compilers (cc).

svn path=/trunk/; revision=649

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