[PATCH] git-rebase: Use --ignore-if-in-upstream option when executing git-format-patch.

This reduces the number of conflicts when rebasing after a series of 
patches to the same piece of code is committed upstream.

Signed-off-by: Robert Shearman <redacted>
---
  git-rebase.sh |    2 +-
  1 files changed, 1 insertions(+), 1 deletions(-)