RFR 8151198: VarHandle factory-specific exceptions

[Paul Sandoz]

Hi

Please review:

  http://cr.openjdk.java.net/~psandoz/jdk9/JDK-8151198-VH-factory-exceptions/webrev/ <http://cr.openjdk.java.net/~psandoz/jdk9/JDK-8151198-VH-factory-exceptions/webrev/>

The patch tweaks the specification:

1) noting that factory methods may document additional undeclared exceptions that may be thrown by access methods e.g. IllegalSateException for VarHandles to ByteBuffer for misaligned access.

2) add the throwing of ClassCastException to each method, which i neglected to add when switching from invokeExact to invoke semantics.

Paul.