Fixed bugs in IPython.kernel. * Removed :mod:`IPython.kernel.contexts` and :mod:`IPython.kernel.tests.test_contexts` and all code that used them. This was broken and needed to be removed. Also Enthought has a nice decorator that does this. * Fixed broken tests in :file:`test_multienginefc.py` and :file:`test_taskfc.py`. See https://bugs.launchpad.net/ipython/+bug/505358. * Changed ports number in :mod:`IPython.kernel.tests` to 10111 to avoid conflicts with users who are using the older 10105 ports. See https://bugs.launchpad.net/ipython/+bug/504515. * Fixed logic and bugs in :mod:`IPython.kernel.fcutils` and :mod:`IPython.kernel.clientconnector` related to how FURL files are validated and found. See https://bugs.launchpad.net/ipython/+bug/502790. * Fixed the unhandled :class:`DeadReferenceError`` exception that was happening in :mod:`IPython.kernel.multiengineclient' and :mod:`IPython.kernel.taskclient` when the controller died or restarted. Now we capture that error and raises a :class:`IPython.kernel.error.ConnectionError` that has a better error message. See https://bugs.launchpad.net/ipython/+bug/502796.