hg: jdk9/hs/hotspot: 8145627: sun.jvm.hotspot.oops.InstanceKlass::getSize() returns the incorrect size and has no test

[serguei.spitsyn at oracle.com]

Changeset: ca241ed18db8
Author:    sspitsyn
Date:      2016-07-22 02:36 -0700
URL:       http://hg.openjdk.java.net/jdk9/hs/hotspot/rev/ca241ed18db8

8145627: sun.jvm.hotspot.oops.InstanceKlass::getSize() returns the incorrect size and has no test
Summary: fix the size and add a test
Reviewed-by: sspitsyn
Contributed-by: jini.george at oracle.com

! src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/oops/InstanceKlass.java
+ test/serviceability/sa/TestInstanceKlassSize.java
+ test/serviceability/sa/TestInstanceKlassSizeForInterface.java