relax SVN archive

Whitespace fix.

Clean up of the code before and after minfx execution.

This includes a number of simplifications. pre_command_feed_back() is now called
initial_printout(). post_command_feedback() has been deleted. This was for a kludge which can be
avoided by setting the minfx printout arg to zero. The calls to set_generic_pre_and_post_amble()
and set_grid_pre_and_post_amble() were part of this kludge and are eliminated. The self.silence
flag is now used to silence printouts when desired.

Deleted the useless post_run() method.

Added some docstrings and comments.

Removed the unused pre_run() method.

Code simplification.

The build_mf() and run_command() methods have been collapsed into the run() method, significantly
cutting the amount of jumping around in the code.

Removed an unused import.

Added more sanity to the STDOUT and STDERR handling by adding some flushing.

Profiling was accidentally turned on!

Some clean ups of the model-free code for multi-processing.