tree 71bbe7b7fc913eaca20f59e0c3e3376f2b6d7489
parent 0c3e9c1215dc734126003dcccdb7abc2d374b50f
author Simon Glass <sjg@chromium.org> 1398012614 -0600
committer Simon Glass <sjg@chromium.org> 1399668645 -0600

patman: Avoid duplicate sign-offs

Keep track of all Signed-off-by tags in a commit and silently suppress any
duplicates.

Signed-off-by: Simon Glass <sjg@chromium.org>