Top level cmake: change warning message to indicate that qfs authentication will not work with openssl versions prior to 1.0.
Top level cmake: change warning message to indicate that qfs authentication will not work with openssl versions prior to 1.0.

chanwit/qfs,qnu/qfs,fengshao0907/qfs,qnu/qfs,chanwit/qfs,quantcast/qfs,thebigbrain/qfs,chanwit/qfs,fengshao0907/qfs,quantcast/qfs,chanwit/qfs,chanwit/qfs,fengshao0907/qfs,thebigbrain/qfs,quantcast/qfs,fengshao0907/qfs,thebigbrain/qfs,quantcast/qfs,qnu/qfs,fengshao0907/qfs,qnu/qfs,quantcast/qfs,chanwit/qfs,quantcast/qfs,qnu/qfs,qnu/qfs,qnu/qfs,quantcast/qfs,thebigbrain/qfs,fengshao0907/qfs,fengshao0907/qfs,thebigbrain/qfs,thebigbrain/qfs,fengshao0907/qfs,quantcast/qfs,chanwit/qfs,thebigbrain/qfs,chanwit/qfs,thebigbrain/qfs,qnu/qfs