- fix perror -> error (thank you alban).
- provide separate options for ssl on in put and on output.  Original flag sets both to true.  Requested by alban
- update the manual for prox.py to mention the new ssl flags
- use the SO_REUSEADDR flag for convenience.  This may allow other programs to bind over our socket, which could be a security issue in some contexts.  This tool is intended for use in test environments.
- mention the REUSEADDR feature as a potential bug in the manual