NEWS: DH, DSA, ECDH, ECDSA and RSA public key function deprecation note
NEWS: DH, DSA, ECDH, ECDSA and RSA public key function deprecation note

Reviewed-by: Richard Levitte <5fb523282dd7956571c80524edc2dccfa0bd8234@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/11063)

openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl