hg: panama/dev: Fix byte vector test failures about bad ad file and unsupported vector size for AArch64

[yang.zhang at arm.com]

Changeset: 25099fb76afb
Author:    yzhang
Date:      2019-01-16 11:49 +0800
URL:       http://hg.openjdk.java.net/panama/dev/rev/25099fb76afb

Fix byte vector test failures about bad ad file and unsupported vector size for AArch64
Summary: add four-byte vectorization support for vector shift and mul.

! src/hotspot/cpu/aarch64/aarch64.ad