Markup on netstat manual page is garbled
Make admin.py 2/3-agnostic.
More port planning.
Use Python-3-compatible 'as' syntax for except statements
Make demo.py run under either Python 2 or 3.
Make an import work with either Python 2 or 3.
Fix token_split() so its one error throws ValueError w/out extra arg.
Some porting advice from Joseph Myers.