Manage listeners from the kernel

Have the kernel directly manage event listeners. Support namespaced event names.

The kernel will use a private namespace in `branch/collection-events` to send meta events into the application using names that won't conflict with any possible application event name. Additionally, the kernel will need to have direct knowledge of event listeners in order to replicate them correctly.

This is a predecessor to `branch/collection-events`, which uses the event mechanism for the kernel to deliver meta events into the application.

@eric79 , please review.

I have to admit that this line break threw me off again.  I looked above the comments and saw `callingMethod` and thought, "Wait!  These are the wrong parameters for `callingMethod`!"  I started to comment before I realized my error.