rvalue references

[Namespace via Digitalmars-d]

Thanks to DIP 25 I think it's time to review this again. I would 
implement it (if no one else wants to do it), but there are still 
some unanswered questions:

1. Is 'auto ref' still the chosen syntax (I guess so)?
2. Should auto ref for templates act like auto ref for 
non-templates (creates a temporary and pass it by ref) or should 
the current behaviour stay (duplicate the function 2^N times)?
3. What's with return ref, should auto ref for non-templates 
include return ref (like auto ref for templates)?
4. What's with this constellation:

struct S { }

void ene(S) { }
void mene(ref S) { }
void muh(auto ref S) { }

should 'mene' (ref) interfere with 'muh' (auto ref)?