Expy Update

I just updated Exim on my home server to 4.63, and built it with my py-exim-localscan (AKA expy) module linked to Python 2.5

Only minor glitch was a C compile warning, that's probably due to better warnings in a newer version of GCC than what I had when the package was originally developed. I fixed it and bundled up a new release - mainly to assure that it's not abandonware.