Work in the documentation.

Initial draft of Windows HPC documentation.

Added better documentation to command line programs.

Fixing minor bugs in IPython.kernel. * Regular expressions now using raw strings in launcher.py * Directory permissions on cluster directory handled properly. * A raw ipcluster start will now create cluster default and add the default config files. * Config files updated to use raw strings where appropriate.

Adding pidigits.py and parallelpi.py to examples.

Merging upstream.

Several small fixes during code review with Brian. - Delete stale ipcluster.py file. - Add default html target to docs makefile - Fix up a warning in api doc generation. - Fix bug with autocall (missing import) - Fix duplicate options in ipclusterapp.

Minor improvements to the parallel computing stuff. * Made various user messages better. * Added a longer (4s) paused before ipcluster exits.

Work on examples and fixed a super subtle bug in Component. * Recently, we stopped copying the config passed to a Component. This had a subtle side effect that mutable config attribute values were becoming class wide attributes. We are now doing a deep copy of all attributes as they are set on the Component instance.

Fixing how the working directory is handled in kernel. * Changed working_dir -> work_dir. * Now, ipcluster does not try to set the work dir for the controller and engine. To set it, just use the engine/controller config or pass the command line arg to the engine_args/controller_args attribute of a launcher.