a few more methods from x509.h for OpenSSL
diff --git a/cryptography/hazmat/bindings/openssl/x509.py b/cryptography/hazmat/bindings/openssl/x509.py
index 74259b3..93098fc 100644
--- a/cryptography/hazmat/bindings/openssl/x509.py
+++ b/cryptography/hazmat/bindings/openssl/x509.py
@@ -169,6 +169,13 @@
int X509_verify_cert(X509_STORE_CTX *);
const char *X509_verify_cert_error_string(long);
+
+const char *X509_get_default_cert_area(void);
+const char *X509_get_default_cert_dir(void);
+const char *X509_get_default_cert_file(void);
+const char *X509_get_default_cert_dir_env(void);
+const char *X509_get_default_cert_file_env(void);
+const char *X509_get_default_private_dir(void);
"""
MACROS = """