hg: jdk8/tl/jdk: 7080020: Add conventional constructors to InternalError and VirtualMachineError

[Alan Bateman]

Joe Darcy wrote:
> Hi Alan.
>
> I did check for that point in my review :-)
>
> The VirtualMachineError class is abstract so as long as all its 
> subclasses declare a serialVersionUID, like InternalError does, I 
> think we're fine.
We need to check the serialization protocol but I'm pretty the object 
stream class of the supertype goes into the stream too. Also I quickly 
checked an an up-to-date build of jdk8/tl and its currently unable to 
deserialize streams contain any of the virtual machine errors like 
OutOfMemoryError, StackOverflowError, etc.

-Alan.