rename wrap/python/ to python/

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* python/: ... this.
* wrap/: Delete.
* Makefile.am, README, configure.ac, debian/python3-spot.examples,
debian/rules, doc/org/.dir-locals.el.in, doc/org/init.el.in,
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python/ajax/README

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+ltl2tgba.html is a dynamic web page that translates user-supplied LTL
+formulae to Transition-based Generalized Büchi Automata.  The actual
+translation work is performed by a CGI script in Python: spotcgi.py.
+
+There are two ways to use the script: using a web server such as
+Apache, or standalone.
+
+In both cases you should ensure that the command `dot', from the
+GraphViz package, is in the PATH.  configure should have picked it up.
+
+The "ltl3ba" tab will only be enabled if ltl3ba is available (as
+checked by ./configure) and supports options -v/-T/-T3 (checked by the
+CGI script).  These option were introduced into ltl3ba version 1.1.0.
+
+
+Standalone usage
+================
+
+Simply run spotcgi.py from this directory.  This will create a directory
+called spotimg/ in the current directory (this will hold the generated
+pictures) and start an HTTP server on port 8000.  Point your browser
+to http://localhost:8000/trans.html and you should be OK.
+
+After you have killed the server process (e.g. with Control-C),
+you may want to erase the spotimg/ directory.
+
+
+Installing on a real web server
+===============================
+
+1) Install Spot first (run `make install' from the top-level).
+
+   The CGI script uses the Python bindings and assume they
+   have been installed.  Near the top of the script, you
+   should see a call to sys.path.insert(), with the expected
+   location of the Python bindings for spot.  This path was
+   configured from ./configure's arguments and you should not
+   have to fiddle with it.  I'm mentionning it just in case.
+
+2) Copy spotcgi.py to some place were CGI execution is allowed.
+   Depending on your HTTP server's configuration, you may have
+   to rename the script as spotcgi.cgi or something else, so
+   that the server accepts to run it.
+
+   Apache users in trouble should look at the following options
+   before digging the Apache manual deeper.  These can go
+   in a .htaccess file (if allowed).
+
+      # Treat *.py files as CGI scripts
+      AddHandler cgi-script .py
+
+      # Allow CGI execution in some directory.
+      Options +ExecCGI
+
+3) In the directory where you have installed spotcgi.py,
+   create a subdirectory called spotimg/.  This is where
+   the script will cache its images and other temporary
+   files.  (If you want to change this name, see the imgdir
+   variable at the top of the script.)
+
+   This directory must be writable by the Unix user that
+   will run the script when the HTTP server processes the
+   request.
+
+   spotcgi.py purges old files at most once every hour.
+
+4) Copy the directories css/, js/, and logos/ along with trans.html
+   to their destination.  You may have to adjust a few paths at the
+   top of the html page.
+
+
+Debugging
+=========
+
+When working on the script, remember that the contents of spotimg/ is
+used as a cache and that a request will not be processed again if its
+result is in the cache.  So if you don't understand why the change you
+have performed has no effect, make sure you are performing some fresh
+query, or wipe the contents of the cache (i.e., erase all files inside
+spotimg/ but not the spotimg/ directory itself).
+
+
+The hash string displayed in the web browser is the query string sent
+to the CGI script, so you can simulate the call from the command line
+with a command like this:
+
+  % export QUERY_STRING="f=a+U+b&r=br&r=lf&r=si&r=eu&o=a&ff=o&mf=d&af=t&ra=t&rf=p&t=fm&fm=od&fm=sm&la=sp&ta=lc&as=ps&ec=Cou99&eo="
+  % export SCRIPT_NAME=spotcgi.py
+  % export SERVER_SOFTWARE=SimpleHTTP
+  % ./spotcgi.py