[ANN] unicorn 4.6.3 - Rack HTTP server for fast clients and Unix

unicorn 4.6.3 - fix --no-default-middleware option

Unicorn is an HTTP server for Rack applications designed to only serve
fast clients on low-latency, high-bandwidth connections and take
advantage of features in Unix/Unix-like kernels. Slow clients should
only be served by placing a reverse proxy capable of fully buffering
both the the request and response in between Unicorn and slow clients.

* http://unicorn.bogomips.org/
* mongrel-unicorn@rubyforge.org
* git://bogomips.org/unicorn.git
* http://unicorn.bogomips.org/NEWS.atom.xml

Changes:

Thanks to Micah Chalmer for this fix. There are also minor
documentation updates and internal cleanups.