RFR(S) : 8012337 : Change Whitebox implementation to make absence of method in Whitebox.class not fatal

[Igor Ignatyev]

Hi all,

Please review patch.

Problem:
If there is some method that presences in native part of whitebox, but 
absences in java side, we get 'j.l.NoSuchMethodError' exception

Fix:
Batch registration of WB functions was replaced with one by one registration

Testing:
JPRT of sanity tests and tests that use WhiteBox: runtime/interned, 
compiler/whitebox

webrev: http://cr.openjdk.java.net/~iignatyev/8012337/webrev.00/
jbs: https://jbs.oracle.com/bugs/browse/JDK-8012337
-- 
Best regards,
Igor Ignatyev