am: don't call mailinfo if $rebasing

diff --git a/RelNotes b/RelNotes
index f8e49a5070afc21fbd3db9320841300fe93c570f..19bb2ebbe687d9ded1a5c82d28d4410de1e2f19f 120000 (symlink)
--- a/RelNotes
+++ b/RelNotes
@@ -1 +1 @@
-Documentation/RelNotes-1.6.4.txt
\ No newline at end of file
+Documentation/RelNotes/1.7.12.txt
\ No newline at end of file