[Issue 21567] build.d install fails, can't find dmd.conf

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=21567

moonlightsentinel at disroot.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |moonlightsentinel at disroot.o
                   |                            |rg
           Hardware|x86_64                      |All

--- Comment #1 from moonlightsentinel at disroot.org ---
This isn't strictly a build.d issue because it the old makefile implementation
had the same problem.

The real problem is that the tarball uses a different directory layout than the
git project. The tarball includes only the configuration files for the current
os:

Git:
- ini/
  - linux/
    - bin32/
    - bin64/
  - windows/
  - ...

Tarball:
- linux/
  - bin32/
  - bin64/

--