8178347: Process and ProcessHandle getPid method name inconsistency
Reviewed-by: alanb, bpb

8146574: (process) ProcessHandle test cleanup
Reviewed-by: chegar

8138566: (Process) java.lang.Process.allChildren specification clarification
8140213: Process/ProcessHandle.onExit() spec need to be improved
8140250: (process) Process.info description is inaccurate
Summary: rename to descendants() and clarify
Reviewed-by: psandoz

8077350: JEP 102 Process API Updates Implementation
Reviewed-by: chegar, plevart, psandoz, darcy, martin, alanb