Use openssl s_server in order to create a temporary SSL server for
creating an SSL session dump for the unit tests to work with. This
removes the requirement of having Internet connectivity for running the
test suite, which prevented package builds from running the unit tests.
Support pf rdr on Mac OS X 10.7, 10.8 and 10.9 by including the missing
Apple headers in the source tree and enable private Apple code. Since
we are using an interface marked private by Apple, this code is very
experimental.
Issue: #15
Reported by: Amit Chowdhary
