8153213: Jar manifest attribute "Multi-Release" accepts any value Reviewed-by: psandoz, redestad Contributed-by: steve.drach@oracle.com

8068693: (ch) test java/nio/channels/AsyncCloseAndInterrupt.java failing. 8153209: java/nio/channels/AsyncCloseAndInterrupt.java fails throwing exception: java.nio.channels.ClosedChannelException. Summary: for JDK-8068693, 500ms is too short on busy system for channel to be closed or for thread blocking on IO to be interrupted, increase the time from 500ms to 10000ms. for JDK-8153209, it's a test regression due to JDK-8151582, do not sleep when running tests for CONNECT/FINISH_CONNECT, sleep for other test cases. Reviewed-by: bpb, martin, rriggs Contributed-by: Hamlin Li <huaming.li@oracle.com>