Properly handle --threadpool if it is not given.

Merge commit 'ezmobius/master'

silly rabbit, threadpool sizes should be numbers not strings

make threadpool size opttion slightly more descriptive

fix comments for mapper (prefetch option). rdoc.info was goofing the render and it's was rather annoying to locate this option :)

Don't override instance_exec if it already exists.

Expand a couple compacted hashes for readability.

Ignore vim swap files.

The mapper now tries using the mapper proxy if no mapper has been started, and a mapper proxy has been set up. Allows for more convenient calling of Nanite.request from code running inside an agent.

Consistently use one version number all around.

Merge branch 'master' of git://github.com/rightscale/nanite

Bump up minor version number for github gem

Add log when agents send results back

Fixed logging of requests when received by agents.

Implement consistent strategy for logging. Fixed warn level logs.

Fixes for Webistrano to work with Ruby 1.9. Updated version_fu to not fail epically when its versions table doesn't exist.