Now that we support internal tests properly, we can test wpacket even in
shared builds.
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2259)
The tests will only work in no-shared builds because WPACKET is an
internal only API that does not get exported by the shared library.
Reviewed-by: Rich Salz <rsalz@openssl.org>