Make it possible to use the cgi script without installing a web

server.

* wrap/python/cgi-bin/ltl2tgba.in: Starts a web server if the
script is not called as a CGI.  Arrange to load libraries from
the build directory.  Create the spotimg/ if needed when run as
a web server.
* wrap/python/cgi-bin/Makefile.am: Adjust build rule and clean
the spotimg directory.
* wrap/python/cgi-bin/README, NEWS: Update.

wrap/python/cgi-bin/Makefile.am

@@ -1,4 +1,4 @@
-## Copyright (C) 2003  Laboratoire d'Informatique de Paris 6 (LIP6),
+## Copyright (C) 2003, 2010  Laboratoire d'Informatique de Paris 6 (LIP6),
 ## département Systèmes Répartis Coopératifs (SRC), Université Pierre
 ## et Marie Curie.
 ##
@@ -26,7 +26,12 @@ CLEANFILES = $(nodist_noinst_SCRIPTS)
 ltl2tgba.py: $(srcdir)/ltl2tgba.in Makefile
 	sed -e 's|[@]PYTHON[@]|@PYTHON@|g' \
 	    -e 's|[@]pythondir[@]|@pythondir@|g' \
+	    -e 's|[@]srcdir[@]|@srcdir@|g' \
+	    -e 's|[@]top_builddir[@]|@top_builddir@|g' \
 	    -e 's|[@]PACKAGE_VERSION[@]|@PACKAGE_VERSION@|g' \
 	    <$(srcdir)/ltl2tgba.in >ltl2tgba.tmp
 	chmod +x ltl2tgba.tmp
 	mv -f ltl2tgba.tmp $@
+
+clean-local:
+	rm -rf spotimg