8066766: The commands in the modular images are executable by the owner only Summary: Also simplify the 'set executable' step of jspawnhelper in ImageBuilder.java Reviewed-by: chegar, alanb

8066678: java.nio.channels.Channels cleanup Reviewed-by: alanb, chegar

8065991: LogManager unecessarily calls JavaAWTAccess from within a critical section Summary: The call to JavaAWTAccess is moved outside of the critical section Reviewed-by: mchung

8035001: TEST_BUG: the retry logic in RMID.start() should check that the subprocess hasn't terminated Reviewed-by: lancea