8078450: Implement consistent process for quarantine of tests
Reviewed-by: dfazunen, dholmes, sspitsyn

8165687: Fix license and copyright headers in jd9 under hotspot/test
Summary: Legal notices and Oracle copyrights were updated (white and blank space, commas) in tests files for uniformity to meet Oracle requirements.
Reviewed-by: dholmes, iris
Contributed-by: Stanislav Smirnov <stanislav.smirnov@oracle.com>, Vassili Igouchkine <vassili.igouchkine@oracle.com>

8157957: ClassNotFoundException: jdk.test.lib.JDKToolFinder
Reviewed-by: coleenp, gtriantafill, mseledtsov, iignatyev, dholmes, dsamersoff

8132711: Add tests which check that Humongous objects behave as expected after Mixed GC
Reviewed-by: tschatzl, dfazunen

8160088: update hotspot tests depending on GC to use @requires vm.gc.X
Reviewed-by: iignatyev, mchernov, dholmes

8132713: Add tests which check that Humongous objects behave as expected after finishing ConcMark Cycle
Reviewed-by: tschatzl, dfazunen

8156763: Quarantine gc/g1/humongousObjects/objectGraphTest/TestObjectGraphAfterGC.java
Reviewed-by: jprovino, tschatzl

8132710: Add tests which check that Humongous objects behave as expected after Young GC
8132712: Add tests which check that Humongous objects behave as expected after Full GC
Reviewed-by: jmasa, dfazunen