8181449: Fix debug.hpp / globalDefinitions.hpp dependency inversion
Summary: Refactor debug.hpp and reverse include dependency.
Reviewed-by: coleenp, stefank, dcubed

8170936: Logging: LogFileOutput.invalid_file_test crashes when executed twice.
Reviewed-by: iignatyev, stuefe

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>

8165702: Convert LogFileOutput internal tests to GTest
Reviewed-by: rehn, rprotacio

8166925: several native TESTs should be changed to TEST_VM
Reviewed-by: vlivanov, kzhaldyb

8157948: UL allows same log file with multiple file=
Reviewed-by: dholmes, rehn

8061219: Implement unit-tests for UL
Reviewed-by: coleenp, mockner, rprotacio