Recommendation: Compile DMD with More Warnings

[bearophile]

Orvid King:

> On the topic of actual warnings, I would be careful with them, 
> because compiling DMD with MSVC with the maximum warning level 
> (essentially -Wall), it produces 150k lines of output, most of 
> them about stuff being inlined, and quite a bit of other stuff 
> that you quite simply, don't care about.

I'd like dmd/ldc2 compilers to compile with warnings active on 
default, plus to have a switch to disable them.

Bye,
bearophile