Upgrade OpenSSL to 0.8.x about hickory-dns

[bluejekyll]

Ok, got to the bottom of it. In changing a bunch of interfaces to return Result (due to some of the changes in OpenSSL), I had made overzealous use of try!() and underthought placement in the validation loops for DNSSec. Everything checks out now.

[bluejekyll]

If you want to submit a PR for that, I'd happily accept.

[bluejekyll]

I started work on this to hopefully fix Travis OSX builds, but man, openssl 0.8.0 is quite different from 0.7 :(

[arcrose]

It is pretty different. I'd have liked to get to this myself but have been over-loaded with other things.

[bluejekyll]

2b14581 is the conversion to openssl 0.8.

While that's basically complete, of course my integration tests for the proof of a signed example.com are now failing :(

looking into it.

[bluejekyll]

oh, and I have all the warnings related to the futures stuff cleaned up in a different branch. I'll be getting rid of those in a little bit.

[bluejekyll]

Travis is passing again with this patch at least :)

[bluejekyll]

FYI, looking more deeply, not all secure queries are failing, and some parts of the chain are validating properly. I'm not entirely able to say right now that there isn't a bug here. rollernet tests are all passing right now, which tells me that it's only example.com that is having issues.

It validates the www.example.com against example.com's DNSKEY, but then fails to validate the DNSKEY for example.com. But since rollertnet tests are functioning this might not be an issue with the upgrade.

[bluejekyll]

cargo test -- --ignored will run all of the integration tests for anyone interested in looking at this.