P11TlsPrfGenerator has anonymous inner class with serialVersionUID

Consider the file src/share/classes/sun/security/pkcs11/P11TlsPrfGenerator.java

It contains the following:

    private static final SecretKey NULL_KEY = new SecretKey() {
        private static final long serialVersionUID = -8090049519656411362L;
        // ...
    }

SecretKey is serializable, and the serialVersionUID was added to remove the warning
emitted by the compiler when a serializable class. However, the anonymous subclass
of SecretKey cannot make any guarantees about serialization compatibility, since it
has a compiler-generated, implementation-specific name that may vary uncontrollably
if the file is recompiled. (In JDK 7 it happens to be named P11TlsPrfGenerator$1.)

Since the point of serialVersionUID is to maintain serialization compatibility,
it's nonsensical for an anonymous class to define a serialVersionUID.

The serialVersionUID should be removed and an @SuppressWarnings annotation added.
Additionally, the compiler probably shouldn't issue a serialization warning in
these cases, but that's a separate issue.

For further information, see the note in section 1.10 of the Serialization specification,

http://docs.oracle.com/javase/7/docs/platform/serialization/spec/serial-arch.html#4539