Verbose as default for commit (optional)

Hi,

It is my first mail to the list, so "hello world".

I wanted to make a feature-request about a config setting to make the
commit always verbose. I'm not the only one asking for that, there is an
old question in [Stack Overflow][1].

So I was thinking if it was possible to make a pull request for that, so
I attach the patch. (I'm proud of it :) ).

I wasn't able to make the test for it, but I wanted to ask (before I
try) if it makes sense to add this feature (or if it is considered
feature bloat).

Thanks.

--- Eloy Espinaco

 [1]: http://stackoverflow.com/questions/5875275/git-commit-v-by-default