TLS_FALLBACK_SCSV Support

```
Ubuntu has rolled out TLS_FALLBACK_SCSV patches (TLS Protocol Downgrade attack 
prevention) to their openssl packages, but servers running mod_spdy are still 
affected due to the built-in openssl.

Because of that it would be great if mod_spdy could be updated to include those 
patches.
```

Original issue reported on code.google.com by `Felix.Bu...@gmail.com` on 17 Oct 2014 at 4:38
