Use packaged openssl crate

[Ryman]

Using the git reference means users can't have e.g. rust-http and rust-postgres as dependencies as rust-postgres has already changed to the packaged version. This then leads to two 'different' crates linking the same native crate.

[Ogeon]

I don't see why not, but it should also be done with the other dependencies if possible.

[reem]

@Ogeon do you have push access to old-http (or @chris-morgan)?

@DiamondLovesYou could we get access if not?

[Ogeon]

I dont know. I haven't tried to push to it.

[reem]

I looked on crates.io and only @DiamondLovesYou has ownership.

[DiamondLovesYou]

Done.