[Issue 16287] update mixin template specs to reflect new import rules (as of 2.071)

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=16287

det <2krnk at gmx.net> changed:

           What    |Removed                     |Added
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                 CC|                            |2krnk at gmx.net
           See Also|                            |https://issues.dlang.org/sh
                   |                            |ow_bug.cgi?id=15925

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