Log Message:
py-Pyro: updated to 4.76

Pyro 4.76
- corrected bogus space in worker thread name
- thread server can now be cleanly stopped with SIGINT / Ctrl-C on Windows
  (if the selectors module is available which is also used by the multiplex server)
- the behavior of the NATPORT config item has been corrected to be in line with \ 
the API behavior of the Daemon:
  if you leave this at 0 (the default), it will now correctly replicate the \ 
internal port number as NAT port
  (instead of crashing with a configuration error)
- certs are now included in sdist archive so the ssl unit tests also run as intended
- now correctly checks for write access to the correct logfile location, instead \ 
of assuming the current directory