Make it possible to run the tests from the source dir without installation. Also clean up the handling of command-line options for iptest, so that all options given at the top-level are correctly passed to nose. Fixes: https://bugs.launchpad.net/ipython/+bug/507079

Let iptest pass arguments correctly to nose (in-process or in subprocess). Fixes https://bugs.launchpad.net/ipython/+bug/507079 Also, remove relative imports from the iptest.py module so it can be run as a script as well under 2.5 or 2.6.

Fix names so these doctests pass correctly when run in bare 'iptest IPython'

Fix frontend tests so they obtain the right global test IPython object.

Minimize stdout side effects in testing instances.

Fix warning on startup if user didn't have personal copies of cluster config. We use the builtin defaults in this case, we were just missing searching in our own paths. Also suppress deprecation warnings from Twisted.

Fix test I'd broken with change of reporting in %who.

Fix %history to stop printing last line. This was triggering a recursive calling of %hist in doctests, resulting in spurious output from the test suite. Closes https://bugs.launchpad.net/ipython/+bug/507705 Also minor pep-8 formatting cleanups.

Make an error message a bit easier to understand.

Clean up output of %who