[Issue 19382] generated dmd should not be the default compiler used to build the tools

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19382

--- Comment #1 from Basile B. <b2.temp at gmx.com> ---
it's rather that by default it doesn't work when there's no generated dmd from
the tools repository.

--