RFR: 8276609: Invalid system property `jdk.serialFilter` set on the commd d line should cause `ExceptionInInitializerError`

[Roger Riggs]

When set on the command line `jdk.serialFilter` to an invalid value, the invalid value is logged but the application is allowed to start without setting the filter.
This leaves the application without the protections of the serial filter.
The specification should be clarify that an `ExceptionInInitializerError` is thrown.

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Commit messages:
 - 8276609: Invalid system property `jdk.serialFilter` set on the command line should cause `ExceptionInInitializerError`

Changes: https://git.openjdk.java.net/jdk/pull/6317/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=6317&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8276609
  Stats: 2 lines in 1 file changed: 2 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6317.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6317/head:pull/6317

PR: https://git.openjdk.java.net/jdk/pull/6317