trunk: added autoconf support for the documentation build system (only build...

trunk: added autoconf support for the documentation build system (only build stuff for which we have the tools: pdflatex, dblatex, xsltproc)


git-svn-id: https://www.dynare.org/svn/dynare/trunk@2634 ac1d8469-bf42-47a9-8791-bf33cf982152