relax SVN archive

Converted all class methods into module functions.

Fixed some imports of relax_data.

Shifted the relax_data module from specific_fns to generic_fns.

Initialized merge tracking via "svnmerge" with revisions "1-6332" from
svn+ssh://bugman@.../svn/relax/1.3

Created a temporary branch for rearranging the relax_data module.

Shifted the C module import error to after the program introduction string.

Improved the relaxation curve fitting C module check to differentiate between missing and bad modules.

Shifted the import check of Scientific.IO.PDB into dep_check.

Shifted the readline dependency check into dep_check.

Added a module docstring and rearranged imports in prompt.interpreter.