Update security/razorback-api to compile with OpenSSL 1.1.x.

This is only compile tested, not run-tested as I don't use this
software. Rather than patching the nested libssh, it switches
to using libssh from security/libssh. There is then an additional
patch to support OpenSSL 1.1.

PR: 228938
Approved by: lwhsu
Differential Revision: https://reviews.freebsd.org/D20844