[Issue 18731] Link only with druntime for the runnable tests if Phobos isn't needed

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18731

Seb <greensunny12 at gmail.com> changed:

           What    |Removed                     |Added
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            Summary|Link only druntime for the  |Link only with druntime for
                   |runnable tests if Phobos    |the runnable tests if
                   |isn't needed                |Phobos isn't needed

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