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

Summary: reduce the scope of the unit test (mark high water mark of testing with @ignore tags)
Reviewed-by: never

Summary: Wrap system property and reflection accesses under doPrivileged.  Ensure constant pool linkage bypasses the SM as specified.
Reviewed-by: kvn, never

7049415: Failure of resolution of sym.reference to the c.s.s. should be wrapped in BootstrapMethodError
Summary: Wrap invokedynamic linkage errors in BootstrapMethodError, as needed.
Reviewed-by: never