Build fails on Debian unstable

[tmatth]

Since SSLv3_* has been removed in Debian:
/home/tristan/servo/.cargo/registry/src/github.com-0a35038f75765ae4/openssl-0.6.7/src/ssl/mod.rs:153: error: undefined reference to 'SSLv3_method'
collect2: error: ld returned 1 exit status
error: aborting due to previous error
Could not compile servo.

This might need to be fixed upstream.
Also see https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=804603
Refs #7888

[frewsxcv]

As of #8637, we have SSLv2 and SSLv3 disabled.

It looks like there are cargo features on rust-openssl that would allow us to stop relying on these methods. Maybe we should disable those features?

/cc @alex

[alex]

Disabling the sslv3 in openssl-sys by default seems reasonable to me.

[Darkspirit]

This can be closed. Build does not fail on Debian Testing.