hg: shenandoah/jdk: Several small aarch64 fixes

[roman at kennke.org]

Changeset: b945d15c23f4
Author:    rkennke
Date:      2018-05-04 09:45 -0400
URL:       http://hg.openjdk.java.net/shenandoah/jdk/rev/b945d15c23f4

Several small aarch64 fixes

! src/hotspot/cpu/aarch64/c1_Runtime1_aarch64.cpp
! src/hotspot/cpu/aarch64/stubGenerator_aarch64.cpp