document extension api, ipy_user_conf, string lists, sh

ipython.rst: cleanup, add sh profile docs, remove deprecated pysh stuff

ipython.rst: clean the markup, warnings only exist in redundant parts

running sphinx (do_sphinx.py) works

remove old ipython.rst

add do_sphinx.py

add empty build dirs for sphinx

add ipython.rst to sphinx source

ipapi, ileo: fix _ip.runlines() cleanup routine for better handling of secondary blocks (else etc)

Added gui and gui.wx to setup.py