- Create .pot (Portable Object Template) files for the en_US documents
Do not ignore en_US language and generate a `.pot` file instead of a `.po`.
These are used as template for tools like Zanata.
- Execute `msgattrib` even on a new `[.po|.pot]` file
This will be useful to wrap long message lines and avoid bigger diffs in
the future.
Approved by: wosch
Differential Revision: https://reviews.freebsd.org/D16726
output. This is not only unhelpful for translators, it is distracting
from the already difficult job of translation. If verbose output is
desired, 'make -l' can be used.