[PATCH 0/2] add--interactive: better mode change handling

This was spawned by a bug report from Jörg about "git add -i"'s handling of mode changes. I don't think it's actually a bug, but rather a feature request, and as such should happen post-1.5.5.

The two patches are:

  [1/2] add--interactive: ignore mode change in 'p'atch command
  [2/2] add--interactive: allow user to choose mode update

Actually, you might argue that 1/2 _is_ a bugfix, though not quite the same one that was reported. I don't actually like the behavior after just 1/2 is applied, but I split the changes to be more readable.

There may potentially be a "[3/2] change the name of the 'p'atch command" since it is now not just about the patch (actually, since git patches _do_ include mode changes, it maybe is appropriate). Wincent suggested "pick" which I think is reasonable. I'm not planning on doing such a 3/2, but I'm sure some industrious soul can make arguments for or against changing the name. I will let them handle the ensuing bikeshed jamboree.

-Peff