RFR: 8278044: ObjectInputStream methods invoking the OIF.CFG.getSerialFilterFactory() silent about error cases.

[Roger Riggs]

The specification of ObjectInputStream constructors that invoke `ObjectInputFilter.Config.getSerialFilterFactory()` do not mention exceptions that may be thrown by the apply() method.

In both constructors, add the following to the paragraph the describes invoking the factory:

     * When the filter factory {@code apply} method is invoked it may throw a runtime exception
     * preventing the {@code ObjectInputStream} from being constructed.

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Commit messages:
 - 8278044: ObjectInputStream methods invoking the OIF.CFG.getSerialFilterFactory() silent about error cases.

Changes: https://git.openjdk.java.net/jdk/pull/6704/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=6704&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8278044
  Stats: 4 lines in 1 file changed: 4 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6704.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6704/head:pull/6704

PR: https://git.openjdk.java.net/jdk/pull/6704