convert net crate to use hyper
convert msg crate to use hyper
convert script crate to use hyper
adjust WPT since hyper fixed some
Set up openssl on Android
auto merge of #4198 : Manishearth/servo/hyper-droid, r=Manishearth

This is the Hyper pull request, plus the set up for OpenSSL on Android to make it merge.

Sean's commits have been reviewed in #4065