Add a helper for testing equality.
Add a helper for testing equality.

adamwolf/pyopenssl,r0ro/pyopenssl,mitghi/pyopenssl,mhils/pyopenssl,mitghi/pyopenssl,aalba6675/pyopenssl,kediacorporation/pyopenssl,Lukasa/pyopenssl,kjav/pyopenssl,rackerlabs/pyopenssl,aalba6675/pyopenssl,JensTimmerman/pyopenssl,kediacorporation/pyopenssl,hynek/pyopenssl,sholsapp/pyopenssl,mschmo/pyopenssl,pyca/pyopenssl,elitest/pyopenssl,reaperhulk/pyopenssl,rackerlabs/pyopenssl,r0ro/pyopenssl,hynek/pyopenssl,samv/pyopenssl,mhils/pyopenssl,reaperhulk/pyopenssl,Lukasa/pyopenssl,daodaoliang/pyopenssl,JensTimmerman/pyopenssl,sorenh/pyopenssl