[Issue 12341] Add EXTRA_C_SOURCES to autotester

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=12341

Nicholas Wilson <iamthewilsonator at hotmail.com> changed:

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--- Comment #1 from Nicholas Wilson <iamthewilsonator at hotmail.com> ---
Whats the status of this now that we have importC?

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