RFR(XS): 8144073: Refactor hotspot/test/gc/g1/humongousObjects/TestHumongousThreshold.java

[Kirill Zhaldybin]

Dear all,

Could you please review this small refactoring fix for JDK-8144073?

It renamed NON_HUMONGOUS_DIVIDER to NON_HUMONGOUS_STEPS  and changed 
allocateAndCheck return type to void.

WebRev: http://cr.openjdk.java.net/~kzhaldyb/webrevs/JDK-8144073/webrev.00/
CR: https://bugs.openjdk.java.net/browse/JDK-8144073

Thank you.

Regards, Kirill