"Jan Mikkelsen" <janm@transactionsite.com> correctly states that the
OpenSSL header files have #include's and extern "C"'s in an incorrect
order.  Thusly fixed.

Also, make the memory debugging routines defined and declared with
prototypes, and use void* instead of char* for memory blobs.

And last of all, redo the ugly callback construct for elegance and
better definition (with prototypes).