That uses some seriously old dependencies. Plus you have some App
Engine version mismatches in your project.clj, which seems unsafe.
Plus, I don't think your core.clj file, with the call to run-jetty,
will run in the production App Engine. Plus, you probably should stick
to using Leiningen (or Maven) to manage your dependencies, rather than
checking .jar files into your project's lib/ directory.
I suggest you take a look at https://github.com/gcv/appengine-magic —
I'm especially interested in feedback and bug reports for the beta
0.4.0 version, which supports the App Engine 1.4.0 SDK.