record: handle translated prompt correctly
The prompt function would return 'y' or 'n' untranslated. This should
therefore not be compared to _('y') and _('n'). However, it turns out
that prompt could just as well return a good old Boolean.
adding a
abort: username 'foo\nbar1' contains a newline
abort: username 'foo\nbar2' contains a newline
transaction abort!
rollback completed
abort: username 'foo\nbar3' contains a newline!