Changes between 1.0.0 and 1.1.0 [xx XXX xxxx]
+ *) Support for companion algorithm specific ASN1 signing routines.
+ New function ASN1_item_sign_ctx() signs a pre-initialised
+ EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
+ the appropriate parameters.
+ [Steve Henson]
+
*) Add new algorithm specific ASN1 verification initialisation function
to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
handling will be the same no matter what EVP_PKEY_METHOD is used.