dmd build instructions from source don't work anymore

[Andrei Alexandrescu via Digitalmars-d]

On 5/12/15 10:32 AM, Laeeth Isharc wrote:
> But either I am mistaken, or in future years you shall still face a
> choice between manually hacking up Phobos and DMD so they compile under
> this last C++-based dmd (a gulf which will widen increasingly) or you
> need to iteratively build compilers to cross the multiple-version
> bridges where changes to the source of dmd+phobos mean that they no
> longer compile with the last but one version.

Yah, that's a classic. Usually multi-stage bootstrapping is used. One 
simpler way to accelerate that is to just download the last version's 
binaries (which is what 
https://github.com/D-Programming-Language/dmd/pull/4645 does). -- Andrei