RFR 8176705: Remove static functions in InstanceKlass

[harold seigel]

Hi,

Please review this JDK-10 cleanup to convert certain static methods to 
instance methods in class InstanceKlass.  These methods can now be 
instance methods as a result of the fix for JDK-8155672 
<https://bugs.openjdk.java.net/browse/JDK-8155672>.

Open Webrev: 
http://cr.openjdk.java.net/~hseigel/bug_8176705/webrev/index.html

JBS Bug: https://bugs.openjdk.java.net/browse/JDK-8176705

The change was tested with the JCK lang and vm tests, the JTreg hotspot, 
java/io, java/lang, java/util and other tests, the RBT tier2 -tier5 
tests, the colocated and non-colocated NSK tests, and with JPRT.

Thanks, Harold