FIx IPython 0.13 issues

[jason]

Can we keep this ticket open to track all the remaining IPython issues left over from #12719?

Still outstanding:

From Kannappan Sampath:

1. I am unable to exit by typing "exit", but Ctrl+D however works!
2. Usually on the first run of sage, I receive some directive from Sage asking me not to interrupt as it is setting some paths. I did not receive such a directive this time...

3. jec@fermat%./sage
   ----------------------------------------------------------------------
   | Sage Version 5.7.beta1, Release Date: 2013-01-26                   |
   | Type "notebook()" for the browser-based notebook interface.        |
   | Type "help()" for help.                                            |
   ----------------------------------------------------------------------
   **********************************************************************
   *                                                                    *
   * Warning: this is a prerelease version, and it may be unstable.     *
   *                                                                    *
   **********************************************************************
   ---------------------------------------------------------------------------
   NameError                                 Traceback (most recent call last)
   /home/jec/sage-5.7.beta1/local/lib/python2.7/site-packages/IPython/utils/py3compat.pyc
   in execfile(fname, *where)
       176             else:
       177                 filename = fname
   --> 178             __builtin__.execfile(filename, *where)
   
   /home/jec/.sage/init.sage in <module>()
   ----> 1 load /home/jec/sage/ecdb.py
   
   NameError: name 'load' is not defined
   

I don't know if (2) is our problem, but we should double-check that the message isn't disabled if it should be printed

[jason]

Another