relax SVN archive

Added a docstring and comments to the Main.__init__() method.

The global LOCAL_TM variable has been shifted into a class level variable.

This variable is not too well used in the code base - presumably this code is incomplete.

Import fixes.

A few more variables from add_relax_data_input() were shifted back into the class namespace.

Access to the GUI elements storing data is required throughout. Eventually this data will be
temporary and only reflect the contents of the relax data store.

self is no longer passed into check_entries() as this is no longer a pseudo-method.

Shifted check_entries() and whichmodel() from select_model_calc to auto_model_free.

These are specific to the automatic model-free protocol, so do not need to be in a separate module.
They were also converted from functions to methods.

Removed the unused analyses.select_model_calc import.

Deleted the exec_model_free() from the relax_gui module.

It is now in the analyses.auto_model_free module.

Modified the call to savefile.

Keyword args are now used and the relax installation directory is not supplied as the default
opening directory.

Modified savefile() to be up to relax' standards and to match the operation of openfile().

The current working directory is changed if the directory arg is not given.