make binary-package prints the .deb filename

So it can be easily copy-pasted.

Note that the filename already printed by debuid/dpkg-buildpackage isn't
convenient, since it's relative to the wrong location.
Fix AttributeError: 'bool' object has no attribute 'find'

This used to happen when the config file did not override a value for
canonical_redirect.
collection.cgi: support apache_connections, apache_idle_workers

This is a result of merging my collection.cgi with
/usr/share/doc/collectd-core/examples/collection.cgi from collectd-core
4.10.1-2.1ubuntu7 from Ubuntu 12.04 LTS.
collection.cgi: add support for fork_rate

BTW upsteam doesn't have it.
Release 0.10