unicorn 4.4.0 - minor updates
Non-regular files are no longer reopened on SIGUSR1. This
allows users to specify FIFOs as log destinations.
TCP_NOPUSH/TCP_CORK is no longer set/unset by default. Use
:tcp_nopush explicitly with the "listen" directive if you wish
to enable TCP_NOPUSH/TCP_CORK.
Listen sockets are now bound _after_ loading the application for
preload_app(true) users. This prevents load balancers from
sending traffic to an application server while the application
is still loading.
There are also minor test suite cleanups.