Reviewed-by: tbell, iris

Summary: Fix up GPL headers by removing leading "#" so that the RE script works.
Reviewed-by: brutisso, coleenp

Summary: Fix up GPL headers so that the RE script works.
Reviewed-by: stefank, dholmes, coleenp

Summary: fix typo in GPL header
Reviewed-by: kvn, dholmes

Summary: Partial backport of 8080600 to make AArch64 a known platform
Reviewed-by: dholmes, coleenp

Reviewed-by: dholmes

Summary: CMSClassUnloadingEnabled and ExplicitGCInvokesConcurrentAndUnloadsClasses should be disabled when -Xnoclassgc is specified
Reviewed-by: jmasa, kbarrett

Reviewed-by: stefank, tschatzl, thartmann

Reviewed-by: dholmes

Reviewed-by: kvn

Reviewed-by: dholmes

Summary: metaspace/shrink_grow/CompressedClassSpaceSize fails with OOM: Compressed class space
Reviewed-by: jmasa, kbarrett

Summary: Node::depends_only_on_test() should return false for Unsafe loads
Reviewed-by: kvn, adinn