[9] RFC: aarch32 changes for JDK-8147461: Use byte offsets for vtable start and vtable length offsets

[Alex Kashchenko]

Hi,

This change is a part of the merge of aarch32-jdk9 with jdk-9+109 
mainline tag.

  - mainline issue: https://bugs.openjdk.java.net/browse/JDK-8147461
  - discussion thread: 
http://mail.openjdk.java.net/pipermail/hotspot-dev/2016-January/021416.html
  - aarch32 patch: 
http://cr.openjdk.java.net/~akasko/aarch32/jdk9/tag_109/aarch32_8147461.patch

-- 
-Alex