
Brute-force the inclusion of system entities when generating the *.xml-info
file.  Apparently, docbook2texi is not capable of doing that.  (sigh...)

svn path=/trunk/; revision=4584

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