RFC: remove "info dll" alias to "info sharedlibraries"?

[Joel Brobecker]

> If it stays, it's best to move it to windows-tdep.c so that it's
> available when cross debugging Windows from a non-Windows host too.
> Or to solib.c, even.

I like the idea of moving it to solib.c!

That way, it's the same for all platforms, and people coming from
the Windows world can continue using "info dll" if that's what
they've been using so far.

Let's go with that.

-- 
Joel