JDK 14 RFR of JDK-8229997: Apply java.io.Serial annotations in java.base

[Joe Darcy]

Hello,

Recent work for JDK-8202385: "Annotation to mark serial-related fields 
and methods" added the java.io.Serial annotation type to the platform. 
The intention of this new annotation type is to allow 
serialization-related fields and methods to be marked as documentation 
and to allow stricter compile-time checking, analogous to the checking 
done for @Override. Implementing those stricter serialization-related 
checks will be done under JDK-8202056.

Please review the application of java.io.Serial to types in the base 
module other than security types:

     JDK-8229997: Apply java.io.Serial annotations in java.base
     http://cr.openjdk.java.net/~darcy/8229997.0/

(Security-related types in the base module are being handled under 
JDK-8229999.)

As a reminder, the 5 serialization-related methods and 2 fields are:

     * private void writeObject(java.io.ObjectOutputStream stream) 
throws IOException
     * private void readObject(java.io.ObjectInputStream stream) throws 
IOException, ClassNotFoundException
     * private void readObjectNoData() throws ObjectStreamException
     * ANY-ACCESS-MODIFIER Object writeReplace() throws 
ObjectStreamException
     * ANY-ACCESS-MODIFIER Object readResolve() throws ObjectStreamException
     * private static final ObjectStreamField[] serialPersistentFields
     * private static final long serialVersionUID

Due to the separate source code management policies for 
java.util.concurrent, I did not include that package in this exercise. 
Likewise, applying the annotation to some of the time-zone related files 
caused build failures so I excluded those types as well.


Thanks,

-Joe