About structs and performant handling

[Namespace]

> A better way to do with would be to change (or extend) the abi, 
> so that
> structs over a certain size are always passed by reference with 
> this
> parameter type.
And what if you want to pass it by value?
I am a opponent of such automatic and uncontrollable compiler 
intervention. Better to manually identify something to be on the 
safe side.

> Then you only need one version of the function.  We could
> use auto ref for this.
'auto ref' will probably never work for non-template functions, 
as Jonathan said some time ago.