[Issue 13517] Only touch .di generated file if changed

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=13517

Ketmar Dark <ketmar at ketmar.no-ip.org> changed:

           What    |Removed                     |Added
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                 CC|                            |ketmar at ketmar.no-ip.org

--- Comment #1 from Ketmar Dark <ketmar at ketmar.no-ip.org> ---
but why compiler should do that? it's a build tool task. the build tool should
know that .di file is generated from .d and invoke generator only if .di file
is missing or older than .d.

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