8148244: Finalize and integrate GTest implementation

Co-authored-by: Stefan Karlsson <stefan.karlsson@oracle.com>
Co-authored-by: Stefan Sarne <stefan.sarne@oracle.com>
Co-authored-by: Jesper Wilhelmsson <jesper.wilhelmsson@oracle.com>
Co-authored-by: Erik Helin <erik.helin@oracle.com>
Co-authored-by: Alexandre Iline <alexandre.iline@oracle.com>
Co-authored-by: Erik Joelsson <erik.joelsson@oracle.com>
Reviewed-by: jwilhelm, erikj
44 files changed