Additional things for deprecation

In a 3.0 context, EVP_PKEY_ASN1_METHOD and all the associated functions should be marked deprecated in my view. Tim.

Re: Additional things for deprecation

Hmmm, are we going to start marking types for deprecation? I would advise against it on a general level, 'cause that's likely to cause an implosion. See for example marking ENGINE for deprecation, i.e. this: diff --git a/include/openssl/types.h b/include/openssl/types.h index ee024cef29..4e73c0d