In addition to the obvious benefit of reducing code duplication, this also
means that implicit inclusion of netstandard.dll works for binding projects as
well.
The existing implementations were slightly different between Xamarin.iOS and
Xamarin.Mac, so I tried to figure out the best merging strategy based on git
history and looking at the original implementation of this code in MSBuild. I
tried to keep close to the original implementation whenever I couldn't find a
good reason to do otherwise.
Rolf Bjarne Kvinge