Honey, I shrunk the build times

[Jonathan M Davis via Digitalmars-d]

On Saturday, 6 June 2015 at 21:42:47 UTC, Andrei Alexandrescu 
wrote:
> https://github.com/D-Programming-Language/phobos/pull/3379
>
> Punchline: major reduction of both total run time and memory 
> consumed.

Reading makefiles always gives me a headache. For those of us who 
can't just glance through the changes and quickly decipher them, 
what did you actually do?

- Jonathan M Davis