[Issue 13040] Use -vcolumns switch on default and remove it

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=13040

Seb <greeenify at gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |greeenify at gmail.com

--- Comment #1 from Seb <greeenify at gmail.com> ---
This might break a few tools that are parsing DMD's output with a simple regex,
so I'm not sure it's worth it.

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