Figure out a way to keep the JVM hot

[hammerdr]

No description provided.

[hammerdr]

Using nailgun, the startup performance (due to having to reload all of narwhal) is still slower than narwhal-jsc. Nailgun is also not fun to set up, in general, and I wouldn't want to pin that process on anyone. We'd need some kind of install script for that (you have to patch narwhal itself!).

Other ideas:

1. Keep the narwhal platform hot using a client/server model similar to nailgun.
2. Pre-compile narwhal-rhino and narwhal-libs and send them directly to the jvm (don't compile the code).