Merge pull request #2703 from alex/pyopenssl-binding

Added two additional bindings that PyOpenSSL might want	
diff --git a/src/_cffi_src/openssl/ssl.py b/src/_cffi_src/openssl/ssl.py
index 64e4e2f..98b396d 100644
--- a/src/_cffi_src/openssl/ssl.py
+++ b/src/_cffi_src/openssl/ssl.py
@@ -234,6 +234,8 @@
 void SSL_CTX_set_cert_verify_callback(SSL_CTX *,
                                       int (*)(X509_STORE_CTX *,void *),
                                       void *);
+int SSL_CTX_set_session_id_context(SSL_CTX *, const unsigned char *,
+                                   unsigned int);
 
 void SSL_CTX_set_cert_store(SSL_CTX *, X509_STORE *);
 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *);
@@ -260,6 +262,8 @@
 int SSL_CTX_get_ex_new_index(long, void *, CRYPTO_EX_new *, CRYPTO_EX_dup *,
                              CRYPTO_EX_free *);
 int SSL_CTX_set_ex_data(SSL_CTX *, int, void *);
+
+Cryptography_STACK_OF_X509_NAME *SSL_load_client_CA_file(const char *);
 """
 
 MACROS = """