Moving druntime into the DMD repository

[Mike Franklin]

On Tuesday, 31 July 2018 at 19:54:20 UTC, Steven Schveighoffer 
wrote:

> If anything makes sense, it would be to remove the 
> compiler-dependencies out of druntime into a smaller runtime 
> library that is included in the dmd project. Most of druntime 
> is dependencies for the platform, not the compiler.

I think this is right-on.  I don't see the solution yet, but I 
don't think it's just a matter of moving object.d.

Mike