8185757: QuickSort array size should be size_t
Summary: Changed array size type, propogate effects.
Reviewed-by: tschatzl, coleenp

8156800: Convert QuickSort_test to GTest
Reviewed-by: rehn, kzhaldyb, rprotacio, mlarsson

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>

8159364: Gtest unit tests does not support PCH
Reviewed-by: erikj, jwilhelm, gtriantafill

8148244: Finalize and integrate GTest implementation
Reviewed-by: jwilhelm, erikj
Contributed-by: stefan.karlsson@oracle.com, stefan.sarne@oracle.com, jesper.wilhelmsson@oracle.com, erik.helin@oracle.com, alexandre.iline@oracle.com, igor.ignatyev@oracle.com, erik.joelsson@oracle.com