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

8024945: Remove check on minimum size of MetaspaceSize
Reviewed-by: kbarrett, tschatzl

8154258: [TESTBUG] Various serviceability tests fail compilation
Summary: Replace sun.misc.Unsafe with jdk.internal.misc.Unsafe
Reviewed-by: chegar, kvn

8042933: assert(capacity_until_gc >= committed_bytes) failed
Reviewed-by: stefank, jmasa