Issue 13: For immutable permissions, make state guarantees and stateInfo interchangable.
Project Member Reported by nels.bec...@gmail.com, Sep 16, 2008
This is related to the conversation that Kevin and I had today about 
ConsList. It would be nice if we could go from
immutable(this, EMPTY) 
to
immutable(this) in EMPTY
and vice versa. And it seems like a reasonable thing to do.