• Fix crashes in the callback functions CTX_set_next_proto_select_cb() and
  CTX_set_alpn_select_cb() caused by the use of a pointer returned by
  SSL_select_next_proto() which may already have been freed under certain
  circumstances. Fixes GH-222. Thanks to dylc5190 for the report.
  
• Remove the dependency on the AES128-SHA cipher suite in the test script
  64_ticket_sharing.t. Fixes GH-231.
  
• Remove checks and warnings in Makefile.PL relating to the use of RSAref,
  which was removed from OpenSSL in version 0.9.7.