xfbuild

[Piotrek]

Long Chang pisze:
>       <http://d.puremagic.com/issues/show_bug.cgi?id=3122>: [patch]
>       Adding support for fast and reliable build tools to the frontend(
>       `this is xfbuild`)
> 
> 

Yeah, I know that. I was talking about a direct build tool 
implementation into dmd. Maybe it could be better to have it done 
separately, but option where it's in compiler has many adventages:

- standardization
- trivial usage
- less tools to maintain
- no compiler-builder version mismatch

Cheers
Piotrek