Code review request for 6857789: (reflect) Create common superclass of reflective exceptions

[Joseph D. Darcy]

Rémi Forax wrote:
> This request seems dangerous,
> InvocationTargetException should not be retrofitted because
> usually its catch block is different from the others.
> As is, this patch will introduce more burden than it tries to revolve.

If needed InvocationTargetException can continue to have a separate 
catch block; if you happen to put a catch for  
ReflectiveOperationException ahead of InvocationTargetException, the 
compiler will emit an error.

-Joe