* Add missing openssl include path.

* Add HAVE_LIBCRYPTO.

After commit eba22f3e you couldn’t  pass options like —dynamic-linking and—enable-profiling to the build command anymore. Those options were accepted by the build_ext command instead. With this change you can pass the options to both build and build_ext.

The extension was not properly build with the “python setup.py install” command, it worked fine with “python setup.py build” but the building wasn’t executed when invoking “install” directly.