This commit undoes the downgrade from OpenSSL v1.0.1e to v1.0.0f,
effectively upgrading OpenSSL to v1.0.1e again. The reason for the
downgrade was to work around compatibility issues with certain TLS
servers in the stable branch. See the commit log of 4fdb8ac and the
linked issue for details. We're going to revisit that in the master
branch.
This reverts commit 4fdb8acdae.
Several people have reported issues with IIS and Resin servers (or maybe
SSL terminators sitting in front of those servers) that are fixed by
downgrading OpenSSL. The AESNI performance improvements were nice but
stability is more important. Downgrade OpenSSL from 1.0.1e to 1.0.0f.
Fixes#5360 (and others).