tree eb9c9db4514da7032f3a172873ce6dc1247beca0
parent 699bcd40be2c10e7e55d955e245f0621b8fab110
author Kyunam.jo <kyunam.jo@lge.com> 1476257599 +0900
committer Kyunam Jo <kyunam.jo@lge.com> 1476671382 +0000

implement optional '--all' in the abandon command

when you want to delete all local branches, you should be find
all branches' name, and type them behind 'repo abandon' command.

Usage:
    repo abandon --all [<project>...]

Change-Id: I4d391f37fb9d89b8095488c585468eafc1a35f31