exceptions.

It turned out that the stack overflow fix from before had disabled
message storing in another test.  Previously, stack overflows would
actually cause a message object to start being created but cause
another exception which would not be reported and that's what stopped
the infinite regress.  This change resores that behavior.



git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@259 ce2b1a6d-e550-0410-aec6-3dcde31c8c00