7051206: JSR 292 method name SwitchPoint.isValid is misleading to unwary users; should be hasBeenInvalidated
Reviewed-by: kvn, never, ysr

Summary: API code changes and javadoc changes following JSR 292 Public Review comments, through PFD
Reviewed-by: never

Summary: package and class renaming only; delete unused methods and classes; add @since tags; no code changes
Reviewed-by: twisti

Summary: misc. EG changes and polishes (excluding 7013417)
Reviewed-by: twisti