[nem-en] Completion

[vc]

> I'm not sure though what should be completed for the other cases. Do
> we want to return some results for empty completion string?

I expect as a result all possible cases, i.e. all imported types, all static
members from imported types, all member from this class (including
inherited), all local variables defined before, all imported macros. So
behaves VS 2005 in case of C#...

> Maybe in
> this case it is better just to analyze context, like local variables
> (available from typer), all possible constructors, etc.

And it is possible to automate it somehow? 

Vlad