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>

8151156: [TESTBUG] Integrate trivial Hotspot test changes from Jake before Jigsaw M3
Reviewed-by: hseigel, gtriantafill

8087342: Crash in klassItable::initialize_itable_for_interface
Summary: Fix method searches to handle static, private instance and overpass
Reviewed-by: lfoltan, dholmes, hseigel