Commits
Chia-chi Yeh authored 100155a310f
VPN: convert prepare() into a form which helps solve race conditions. When someone tries to revoke packageA, it is possible that packageA is already revoked by packageB. In this case packageB should not be revoked, and the new prepare() can help solve this problem. Change-Id: Iee056a191dd99467b8ad1b5379a17b02d404bad1