First cut at OpenSSL support that works.
When running the clang analyzer, call ZAssert et al call through to the standard assert, which is marked as non-returning, eliminating a bunch of clang warnings.
Don't hold the mutex through destruction.
%uc doesn't write an unsigned char as a char, but as an int with a trailing 'c'.
Make clang analyzer happy.
Tentative steps on support for server-side ssl.