[Issue 4567] dmd should print the dmd.conf location with usage statement

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=4567

--- Comment #7 from Steven Schveighoffer <schveiguy at yahoo.com> ---
I like the pull direction -- outputting dmd.conf when object.d cannot be found
is a good idea. But it still doesn't solve the issue of when you are compiling
with the wrong *working* installation.

Is it difficult to add the dmd.conf location to the usage output? Arguably, dmd
-v without any parameters should show it.

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