Absolutely horrible default string hashing

[Frits van Bommel]

Jarrett Billingsley wrote:
> Here's something bizarre: porting this example to Tango yields 99997
> unique hashes, which is right in line with your estimate.  But I think
> it's bizarre since, well, shouldn't druntime use _the same typeinfo
> code?_

No, Tango recently upgraded its hashing algorithms. This was done after druntime 
was created, and presumably before the Tango version on your machine :).