Bump version number to 2.60.42.
Autodiscover globaleaks packages in setup.py.

Use setuptools' package discovery helper function instead of manually updating
the list on setup.py.
This fixes the missing globaleaks.models modules in "packages" on setup().
Change {owner,permission} in /var/globaleaks anyway.

Fix bin/gl-fix-permissions: shrink it, and make it so that owner and permissions
are forcefully changed on each run.
Restart tor after changing its configuration, in postinst.