relax SVN archive

Another fix for assign_function().

The last commit incorrectly set up the function args.

Fix for assign_function(), the spectrum_type arg is sent into it!

Added the removal of temporary manual file to the 'clean' scons target.

Deleted the return_value() method as the base class method is sufficient.

Set the specific_fns.base_class.Common_functions as the base class of the Noe class.

Fix for the write_data() function.

The file arg was missing from the write_header() call, and the docstring has been converted to
epydoc format.

Updated the value.write() user function interface to the new design.

Deleted the write() method as it has never been used!!!

Deletion of a number of methods no longer used in the 1.3 line.

These are:
read_columnar_results()
write_columnar_line()
write_columnar_results()

Converted the calculate() method to the new design.