[PATCH v3] Make rebase save ORIG_HEAD if changing current branch

[Brian Gernhardt <benji@silverinsanity.com>]

This makes rebase act a little more like merge when working on the
current branch.  This is particularly useful for `git pull --rebase`

Signed-off-by: Brian Gernhardt <benji@silverinsanity.com>
---

 Okay, I apparently should stop coding after midnight, even if I think I'm
 awake enough.  This version uses the correct variable.  $orig_head looks like
 the right name, but it stores the symbolic ref.  $prev_head stores the actual
 SHA1, which is what I was looking for.

 git-rebase.sh |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/git-rebase.sh b/git-rebase.sh
index e2d85ee..44db7e6 100755
--- a/git-rebase.sh
+++ b/git-rebase.sh
@@ -434,3 +434,4 @@ do
 done
 
 finish_rb_merge
+git update-ref ORIG_HEAD $orig_head
-- 
1.5.6.2.337.gf6537