* doc/org/index.org, doc/org/tut.org: New files.
* doc/Makefile.am: Add them.
* doc/org/setup.org: Adjust HOME link.
* doc/org/tools.org: Adjust UP link.
* debian/spot-doc.doc-base: The root is now index.html.

* doc/org/setup.org: New file.
* doc/Makefile.am: Distribute it.
* doc/org/autfilt.org, doc/org/csv.org, doc/org/dstar2tgba.org,
doc/org/genltl.org, doc/org/ioltl.org, doc/org/ltl2tgba.org,
doc/org/ltl2tgta.org, doc/org/ltlcross.org, doc/org/ltlfilt.org,
doc/org/ltlgrind.org, doc/org/oaut.org, doc/org/randaut.org,
doc/org/randltl.org, doc/org/satmin.org, doc/org/tools.org: Use
setup.org.