JDK 14 RFR of JDK-8232230: Suppress warnings on non-serializable non-transient instance fields in java.util.concurrent

[Joe Darcy]

Hello,

Expanding the serialization review to include the java.util.concurrent 
package, please review the proposed changes:

     JDK-8232230: Suppress warnings on non-serializable non-transient 
instance fields in java.util.concurrent
     http://cr.openjdk.java.net/~darcy/8232230.0/

Terminology added by  JDK-8231913: "Discuss serializability of 
collections" used where appropriate.

Thanks,

-Joe