git-merge: fix faulty SQUASH_MSG Only the first 'remote' head is currently specified as an argument to 'git log' when generating a SQUSH_MSG, which makes the generated message fail to mention every commit involved in the merge. This fixes the problem. Noticed-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Lars Hjemli <hjemli@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>