dmd's linking order

[Martin Nowak]

> Unfortunately, I have no idea why the linking order even matters in the  
> first
> place, so I can't really say what we need to do here. Hopefully, someone  
> else
> around here _does_ know. But the issue does seem to need to be brought  
> up.
>
The linker will only use succeeding archives to resolve undefined symbols,
i.e. phobos2 needs to precede curl. It seems to work when linking against
shared libraries though.