Issue 70: Don't block UDP from "listening" using the network policy.
Issue 68: Support Cipher.update with a string and no encoding.
Upgrade to new version of Rhino with many compatibility fixes.
This now means that we depend on "io.apigee.rhino" rather than
"org.mozilla.rhino."

Switch to a new Rhino feature that uses V8-style stack traces.

Stop printing the path name from my laptop in compiled scripts.

Upgrade app tests to the latest version of express to ensure that they work.
Add missing files from express upgrade.
Update to Rhino 1.7R5pre3.