issue 2704 - shell terminal functionality

https://bugs.python.org/issue2704
Title: IDLE: Patch to make PyShell behave more like a Terminal interface

I'd love to see this patch committed to the main line. Do we think the
change is ready at this point?

Thanks!

-- 
A musician must make music, an artist must paint, a poet must write,
if he is to be ultimately at peace with himself.
- Abraham Maslow