Include ssl dependencies into ssl_compat for python versions <2.7.9

Author: Aakash Gandhi

hyper/ssl_compat.py

@@ -50,6 +50,8 @@ def inner(self, *args, **kwargs):
 
 
 # TODO missing some attributes
+SSL_ERROR_WANT_READ = 2
+SSL_ERROR_WANT_WRITE = 3
 class SSLError(OSError):
     pass