Make the check for jade error in CHECK_DTD less conservative, i.e. does not consider a warning as an error.  With this change, I can at least build the pdf and html forms of the documentation.  The pdf output looks strange though, with lots of strange characters.
Make the check for jade error in CHECK_DTD less conservative, i.e. does not
consider a warning as an error.  With this change, I can at least build the
pdf and html forms of the documentation.  The pdf output looks strange
though, with lots of strange characters.

I am using openjade1.3 (http://openjade.sf.net/) from Debian stable.  This
may explain the problems.  They have to be sorted out before the next
release.

svn path=/trunk/; revision=4350

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