[automerger] RESTRICT AUTOMERGE: Update libxml2 to 2.9.8 am: a50550f8 am: 095b37ab am: 3da2abd3 skipped: aca7e898 am: 4a01492c am: 1c1fb5ba am: eaf22219 am: 9bf8ef0b skipped: 19ebab4b am: c9de55c9 am: 6aa4a075 Change-Id: I5f97a960a4316e79c76bbd5e78690dfba5f3b278