[Issue 20248] Module constructors in executable called twice, never in loaded shared library

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=20248

--- Comment #2 from kinke <kinke at gmx.net> ---
Further tests have shown that with DMD, the ModuleInfos of modules contained in
both executable and library are apparently resolved to the executable's.

E.g., versioning out the module ctor in `modcon2.d` for the library still leads
to it being invoked when loading the library; the opposite case, versioning it
out for the executable, means it's not invoked at all.

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