Interesting NoSQL-in-Postgres scraps.

It's coming! PostgreSQL: not just for SQL anymore!
view.py is now executable, in demo; it reads the films table changes feed and spits out the relevant lines

Getting this to work required beating up the SQL a bit too.
Make test output more readable.

There's a bug: select() on a pipe, on my system,
 does not seem to be behaving. It is saying "yes,data!"
 even when the immediate read() following gives "" (ie EOF).
This change helps hunt this problem down.