[Issue 10023] Add rtInfo (or equivalent) to ModuleInfo

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=10023

--- Comment #7 from Adam D. Ruppe <destructionator at gmail.com> ---
> We are still lacking a workable idea how to make RTInfo/RMInfo customizable.

Why does it have to be customizable? I think it gives enough benefit just to
the runtime author (which btw may include custom runtimes) to be brought in,
and then it also simplifies the compiler/runtime interface by letting us move
more and more right out.

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