Using the Unicode ellipsis (…) instead of three periods

[Jeremy Bicha <jbicha ubuntu com>]

I think it's time that we move away from using three periods (...) to
represent the ellipsis and instead use the Unicode character (…).

This style has already been adopted by Microsoft [1] and Apple [2].

[1] http://msdn.microsoft.com/en-us/library/windows/apps/jj553415.aspx#2._Exploit_the_power_of_Unicode
[2] http://developer.apple.com/library/mac/#documentation/userexperience/conceptual/applehiguidelines/TextStyle/TextStyle.html#//apple_ref/doc/uid/TP30000365-TPXREF126

On the other hand, I think it's less clear whether we should change
command line output as the single Unicode ellipsis takes up
significantly less space than three periods in a monospace font.

Jeremy