src, test: fixup after v8 update

Because of behavior change of some V8 APIs (they mostly became more
    strict), following modules needed to be fixed:

* crypto: duplicate prototype methods are not allowed anymore
* contextify: some TryCatch trickery, the binding was using it
incorrectly
* util: maximum call stack error is now crashing in a different place

Reviewed-By: Trevor Norris <trevnorris@gmail.com>
PR-URL: https://github.com/joyent/node/pull/8476