debugger: improve ESRCH error message
When use iojs debug -p <pid> with an invalid pid,
the debugger print internal error message also,
it not enough smart.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
When use iojs debug -p <pid> with an invalid pid,
the debugger print internal error message also,
it not enough smart.