Fix Dart_New so that it works with List.

Fix Dart_New so that it works with List.

Specifically, when some interface "I" declares a default class "C",
that class "C" may either implement or not implement "I".  It turns
out that the name lookup is supposed to be different in these two
cases.  Before I only handled one of these cases correctly.

Also, it turns out I was passing bogus parameters to factory constructors.
I was supposed to pass type arguments, but instead I was passing the
wrong thing.  Fixed this.

This should fix issue 2971.
Committed: https://code.google.com/p/dart/source/detail?r=8072

[regis, 2012-05-24 22:26:12]

LGTM

At some time, are we going to support type arguments in the API? This would
allow the allocation of List<String>, rather than today's List<Dynamic>.

[turnidge, 2012-05-29 17:52:19]

On 2012/05/24 22:26:12, regis wrote:
> LGTM
> 
> At some time, are we going to support type arguments in the API? This would
> allow the allocation of List<String>, rather than today's List<Dynamic>.

Yes.  We plan on supporting type arguments in the api.  I haven't gotten to that
yet.