[Bench!][Mir] +54%..+185% performance boost for Mersenne Twister.

[Guillaume Piolat via Digitalmars-d]

On Saturday, 26 November 2016 at 20:13:36 UTC, Andrei 
Alexandrescu wrote:
>
> Congrats! Also thanks for using the Boost license which would 
> allow backporting the improvements to Phobos. Who'd be up for 
> it?
>
> Also I'm thinking of removing std.random's dependency on 
> druntime, e.g. by removing the uses of enforce. Thoughts?
>
> Andrei

Without druntime, global ctor/dtor and TLS can't be used too.
Besides nothrow @nogc, std.random relies on a global ctor for 
creating the default RNG, which is used liberally.
A useful intermediate step is to have these "[shared] static 
this" ctor call a function instead, so that programs without 
druntime can call them too.