Added the Strongarm module to allow exporting of variables.
middlebury_cas_settings: New feature that contains the standard Middlebury CAS settings.

This feature doesn't include the following optional settings.

The proxy-authentication are only needed by some sites. These 3 are needed if
this Drupal instance will proxy (pass off) authentication to an underlying
CASified application (e.g. WordPress).
 - cas_proxy
 - cas_pgtpath
 - cas_fixed_callback_url

These two settings are needed if this Drupal instance will be a backend and
have it's authentication proxied by another application.
 - cas_allow_any_proxychain
 - cas_allowed_proxychains

The cas_cert setting should be set on a per-server basis as it refers to a
file-system path that may be different on different machines. It should be
the path to the CA cert that validates the certificate used by the CAS server.
 - cas_cert

This setting should only be used when debugging CAS issues.
 - cas_debugfile
middlebury_cas_settings: Removed management of the "Allowed Groups" setting.

This setting may be different on various installations and should be managed
on a per-instance basis.
middlebury_cas: Filtering users based on group membership now allows no filtering.

An empty list of groups implies that all users are allowed.
Merge branch 'Midd-CAS_settings'