hg: build-infra/jdk8: Count libraries that are identical. Add hotspot version setting for identical test.

[kelly.ohair at oracle.com]

Changeset: 3ed92d2378b0
Author:    ohair
Date:      2012-08-18 22:02 +0200
URL:       http://hg.openjdk.java.net/build-infra/jdk8/rev/3ed92d2378b0

Count libraries that are identical. Add hotspot version setting for identical test.

! common/bin/compareimage.sh
! common/bin/test_builds.sh