Unicorn 3.6.1 - HTTP server for fast clients and Unix

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.

Changes:

This fixes our OpenSSL PRNG workaround

Our attempt in 3.6.0 to workaround a problem with the OpenSSL
PRNG actually made the problem worse. This release corrects the
workaround to properly reseed the OpenSSL PRNG after forking.

Thanks to ghazel for the bug report!