relax SVN archive

Modified and renamed read_columnar_col_numbers() to __read_col_numbers().

Fixed the method name.

Fixes for the verbosity variable.

Passed the verbosity variable into the __determine_version() method.

Split the read_columnar_results() method into version specific methods.

Wrote a method for determining which relax version the results file belongs to.

Split off all the model-free results files methods into their own module.

Renamed the main model-free module.

The original module was specific_fns.model_free.model_free whereas the new is
specific_fns.model_free.main.

Numeric to numpy conversion.

Added a missing import.