Metadata requireSignedMetadata=false Behavior

[Nate Klingenstein]

> An ID is a syntactic comment for logging. That's not a change.

It is for those of us who need to write documentation that we would like to address both. :\

https://issues.shibboleth.net/jira/browse/TS-28

All we should really do is provide a copy/paste stanza now, I guess.

> Edugain is something federations consume, not IdPs. At least not in general.

I think there's a [legal] difference between republishing something under your signature and distributing something signed by someone else that is going to prove very important, even if you have a registering authority, so I think the single key thingy stands.