Add mode to disallow session creation.

Android needs this and it was patched into their OpenSSL in
  https://android.googlesource.com/platform/external/openssl.git/+/master/patches/0003-jsse.patch

It appears that this is needed because javax.net.ssl.SSLEngine has it as
part of its interface and thus it's part of the Android API. No idea why
anything would ever want to disable that though.

Change-Id: I9c6279a961637f44936889edbe269b9d5c19746d
3 files changed