[MERGE] several tweaks for formatting selftest output (was: Re: [rfc] why selftest -v don't use osutils.terminal_width() for formatting output?)

[Bundle Buggy]

Bundle Buggy has detected this merge request.

For details, see: http://bundlebuggy.aaronbentley.com/request/%3Celmebr%24fsa%241%40sea.gmane.org%3E