hg: panama/dev: Implement VectorShuffle rearrange and iota for AArch64 NEON

[yang.zhang at arm.com]

Changeset: 49c5a329c453
Author:    yzhang
Date:      2019-10-08 14:55 +0800
URL:       https://hg.openjdk.java.net/panama/dev/rev/49c5a329c453

Implement VectorShuffle rearrange and iota for AArch64 NEON

! src/hotspot/cpu/aarch64/aarch64.ad
! src/hotspot/cpu/aarch64/assembler_aarch64.hpp
! src/hotspot/cpu/aarch64/stubGenerator_aarch64.cpp
! src/hotspot/cpu/aarch64/stubRoutines_aarch64.cpp
! src/hotspot/cpu/aarch64/stubRoutines_aarch64.hpp