8173912: [JVMCI] fix memory overhead of JVMCI
Reviewed-by: kvn

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>

8132919: Put compiler tests in packages
Reviewed-by: vlivanov, dpochepk
Contributed-by: igor.ignatyev@oracle.com

8157181: Compilers accept modification of final fields outside initializer methods
Summary: Track initialized final field updates; disable constant folding if an update is detected. Enforce final field update rules introduced by JVMS-7 (but only for JDK 9).
Reviewed-by: vlivanov, dnsimon, forax, never, kvn, coleenp

8137058: Clear out all non-Critical APIs from sun.reflect
Reviewed-by: alanb, jfranck, mchung

8141618: Change JVMCI compilerToVM constant pool tests to support CP cache
Reviewed-by: twisti, dpochepk

8139170: JVMCI refresh
Reviewed-by: kvn

8136421: JEP 243: Java-Level JVM Compiler Interface
Reviewed-by: ihse, alanb, roland, coleenp, iveresov, kvn, kbarrett