Merge pull request #455 from reaperhulk/init-ssl-stuff

Init the ssl library in the backend
diff --git a/cryptography/hazmat/backends/openssl/backend.py b/cryptography/hazmat/backends/openssl/backend.py
index 284fa98..07ee58c 100644
--- a/cryptography/hazmat/backends/openssl/backend.py
+++ b/cryptography/hazmat/backends/openssl/backend.py
@@ -43,7 +43,11 @@
         self._ffi = self._binding.ffi
         self._lib = self._binding.lib
 
+        # adds all ciphers/digests for EVP
         self._lib.OpenSSL_add_all_algorithms()
+        # registers available SSL/TLS ciphers and digests
+        self._lib.SSL_library_init()
+        # loads error strings for libcrypto and libssl functions
         self._lib.SSL_load_error_strings()
 
         self._cipher_registry = {}