Change strtol to strtoul in text2num since PLUNICODE is a 32-bit  unsigned integer. The previous version worked on 64 bit architectures,  but not 32 bit architectures. This broke the interpretation of FCI  strings in example 23 and caused ctest to fail. 
Change strtol to strtoul in text2num since PLUNICODE is a 32-bit 
unsigned integer. The previous version worked on 64 bit architectures, 
but not 32 bit architectures. This broke the interpretation of FCI 
strings in example 23 and caused ctest to fail. 


svn path=/trunk/; revision=8298

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