Add support for disabling ciphers entirely (with lots of dire warnings
in the form and the help text).

(cherry picked from commit edb02cf14a076d12c75f713bd969c237d28874a5)
Feature Request #2227 option for compressing replication stream

(cherry picked from commit 100bfd6be5526ce98b59ce1e52ca5dd1dedf7b8e)

Ticket: #5716