ldmd2 isn't built for ldc 1.8.0-beta1

[kinke]

On Sunday, 25 February 2018 at 18:37:52 UTC, Thomas Mader wrote:
> The package build script for ldc for the Nix package manager 
> produced the ldmd2 binary in the bin directory next to the ldc 
> binary.
> With this beta the binary is missing. Don't have a clue why it 
> isn't build anymore.

I don't remember any relevant changes. The make/ninja target is 
'ldmd2' and it's included in the 'all' target.