New code tries to guess a per-visitor IP address and uses
that (or its hash) to tell users apart.
This patch also adds a TAWASHI_WITH_IP_LOGGING cmake option
to enable or disable logging the IP address of your visitors
in various places (just one right now but don't assume things
to remain this way).
Also added a couple new CGI environment variables.
Get raw environment variables directly from main().
Add code to split on '=' in cgi_environment_vars and only pick
the ones that are interesting, just as before.
