singularity: Re-add panic recovery to reqID with comment.
singularity: Re-add panic recovery to reqID with comment.

- Also prints a more specific name for the request ID if it panics
  rather than defaulting to saying the requiest parent was nil, as
  we can't be sure of that without the stack trace.

opentable/sous,samsalisbury/sous,opentable/sous,opentable/sous,opentable/sous,samsalisbury/sous,samsalisbury/sous,samsalisbury/sous,samsalisbury/sous,opentable/sous