Import OpenSSL-1.0.1l.

Import OpenSSL-1.0.1l.

* Fixes for CVE-2014-3571, CVE-2015-0206, CVE-2014-3569, CVE-2014-3572,
  CVE-2015-0204, CVE-2015-0205, CVE-2014-8275 and CVE-2014-3570.

* Ensure that the session ID context of an SSL is updated when its
  SSL_CTX is updated via SSL_set_SSL_CTX.

* Do not resume sessions on the server if the negotiated protocol
  version does not match the session's version.

* Tighten handling of the ChangeCipherSpec (CCS) message.

* Tighten client-side session ticket handling during renegotiation.

Also, while here, remove the doc/ subdirectory on the vendor branch.
We don't need to distribute it in contrib/.