Add NPN to an SSL3 build
Add NPN to an SSL3 build

Reviewed-by: Emilia Käsper <6521fc25e7624eef7c3a0d89b71de7e612d27d37@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1629)
openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl