Changed the define in configure.ac to match the one used in the code.
Fixed downgrading to disallow unless ssl->options.downgrade is set.
TLS 1.3 client method does not have downgrade on anymore.
Test changed to not expect downgrading to work.
Test of TLS v1.3 client downgrade is actually upgrading on server.
Fixed 80 character line problems.
7dca25ea88