2016/03/17: Standard sizes

It is amazing, how over time you get used to what the normal size of various objects should be. Randomly assuming the terminal is 80 characters wide seems a perfectly normal thing to do, but doing the same arbitrary assumption with 97 characters looks completely strange. So I found myself yesterday writing a patch changing the assumption about the terminal width. (The correct thing is to determine the actual terminal width, but the part of Bazel that does that is not yet built at that early bootstrap phase.)