Update f77 version of example 23 to include missing space at end of  lines in strings. gfortran padded the line to 72 characters, but ifort  did not, resulting in differences for the C version.
Update f77 version of example 23 to include missing space at end of 
lines in strings. gfortran padded the line to 72 characters, but ifort 
did not, resulting in differences for the C version.


svn path=/trunk/; revision=8653

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