* No more FUNCS/MACROS distinction

* change the docs to not talk about MACROS since they're gone

* remove out of date comment

* Add PEM_write_bio_DHxparams

* Define PEM_write_bio_DHxparams only if EVP_PKEY_DHX defined.
Both added in commit afb14cda in openssl

* Add d2i_DHxparams_bio and i2d_DHxparams_bio bindings

* Fix bindings addition

* change condtional bindings to be after 1.1.0f

* Change i2d_DHxparams_bio return type

* define Cryptography_d2i_DHxparams_bio and Cryptography_i2d_DHxparams_bio

* Remove d2i_DHxparams_bio, i2d_DHxparams_bio bindings

* Add declarations for Cryptography_d2i_DHxparams_bio and Cryptography_i2d_DHxparams_bio

* Move Cryptography_d2i_DHxparams_bio and Cryptography_i2d_DHxparams_bio declaration to MACROS

* Add Cryptography_d2i_DHxparams_bio, Cryptography_i2d_DHxparams_bio and PEM_write_bio_DHxparams to _coditionals.py

* Make sure we did not define EVP_PKEY_DHX

* We always have EC

* We always have ECDH

* We always have ECDSA

* We always have EC codes

* This can go as well

* And this

* unused import

* Add more bindings to OpenSSL, all are used by the Python _ssl module.

* Add a conditional: SSL_CTX_clear_options() does not exist before 0.9.8m

* 80 cols

* Condionally define the TLSEXT error codes.

* Address review comments

* Remove all parameter names