Bug#828451: Patches

[Chris West]

Control: tags -1 + patch

I've sent upstream some patches:
 * https://github.com/netty/netty-tcnative/pull/325
 * https://github.com/netty/netty/pull/7544

There hasn't been any objections, beyond an unwillingness to remove the
feature. I am pretty sure we can live with having removed the feature,
so could apply the patches regardless of upstream's decision.

The patches turned out to be very small, and will usefully conflict with
any upstream changes, e.g. if they decide to properly fix renegotiation.

Chris.