Log Message:
Update ruby-backports to 3.6.0.

== Version 3.6.0 - February 14th, 2014

* Additional features of 2.1.0
  * Bignum#bit_length
  * Fixnum#bit_length
  * Module#include (now public)

== Version 3.5.0 - February 3rd, 2014

* Additional features of 2.0.0
  * Range#size

== Version 3.4.0 - December 29th, 2013

* Additional features of 2.1.0
  * Array#to_h, Enumerable#to_h