Include mime if ssl is in use.

Without the default_mods we still try to setup an SSL vhost that fails
because AddType is used in the template.  Rather than trying to make
AddType conditional on the inclusion of the class we just require mime
as a standard mod no matter what you say.
Wrap the event test in a check for FreeBSD.

It seems this only works on FreeBSD currently.  In the future
we'll rework testing to test for 2.2 vs 2.4 or something.
Merge pull request #448 from apenney/spec-fixes

Spec fixes