Re: [PATCH] Add `commit.signoff` configuration variable.

You need to defend this one better, in fact a *lot* better, than other
ones.  See

  http://thread.gmane.org/gmane.comp.version-control.git/32503/focus=32522
  http://thread.gmane.org/gmane.comp.version-control.git/103939/focus=104207

for starters.  Your justifications should address all the points raised in
previous threads.