- Small fix to pexpect to prevent unhandled exceptions at Python shutdown time.

If entering the first object level (i.e. the object for which the browser has been started) fails, now the error is raised directly (aborting the browser) instead of running into an empty levels list later.

Minor change so that ipython starts correctly even if called via 'python -S', which avoids loading site.py

Add an xrepr implementation for the noitem object.

Fix filename.

- Small tab-completion bug fix for Enthought objects.

Small fix for %run which wouldn't complete arguments to scripts if they didn't end in .py or .ipy.

- Bug fixes in Demo code to support demos with IPython syntax - Extensive irunner changes needed for doctesting out of process IPython examples.

- Small extension bug fix (irunner would fail to automatically recognize file extensions).

IPython/Extensions/ipipe.py (xiter): Make sure that iterating a string containing a single line yields the string itself as the only item. IPython/Extensions/ibrowse.py (ibrowse): Avoid entering an object if it's the same as the one on the last level (This avoids infinite recursion for one line strings).