Add D front-end, libphobos library, and D2 testsuite... to GCC

[Mike Franklin]

On Monday, 29 October 2018 at 03:43:49 UTC, Mike Parker wrote:
> Congratulations are in order for Iain Buclaw. His efforts have 
> been rewarded in a big way. Last Friday, he got the greenlight 
> to move forward with submitting his changes into GCC:

Congratulations! Iain.  It's an extraordinary accomplishment.  I 
salute you.

Mike