Use a specific IDP for a given resource -- mod_shib not doing as we're telling it

[Nate Klingenstein]

Keith,

What happens if you remove the entityID attribute from the SSO element entirely rather than trying to make it a null string?

Thanks,
Nate.

> the SSO element in shibboleth2.xml, urn:mace:incommon:uiuc.edu. And when it's left blank in shibboleth2.xml, "entityID=""), he gets an error that his request can't be handled by any session initiators.