openid support fails on https IDs

[reinout]

Found the cause for not being able to log in with openid on my own site and on martinaspeli.net, for instance.

Reason:  https://reinout.myopenid.com did fail, though the myopenid side of things worked fine. But the "https" was the problem on plone's side (and for a few other sites).  http://reinout.myopenid.com worked just fine.

The end result if you try it with an https id: the personalbar barfs with an attributeerror (#7296).

Perhaps there ought to be a check for "https" if there's no https support compiled in?

[wichert]

(In [17773]) Accept https as well. fixes #7298

[reinout]

Thanks for fixing it!