
Make the temporary XML file to be a standalone one, such that entity
definitions are not looked for externally.  Also, added defintions for the
entites found in ../src/api.xml (like &deg;, &lt;, etc.) This change may
make this script work in any situation, even in broken OS'es ;-)

svn path=/trunk/; revision=4556

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