relax SVN archive

The model-free GUI auto-analysis 'About' dialog is now stored as a class instance variable.

This allows it to be manipulated remotely, for example by the GUI tests.

The GUI user functions are now going straight to the back end rather than through the prompt.

The GUI user functions were previously passing through the prompt UI user functions for argument
checking, which then passed on to the back end. Now the prompt is bypassed, and the back end is
being directly called. This should speed up the user functions, and specifically the GUI tests.

The prompt UI versions of the auto-generated user functions are now stored in self._uf_dict.

This is a dictionary whereby the keys are the full user function names as text. This is designed
for speed, so that the user function object can be retrieved much faster.

Bug fix for all of the specific analysis code.

The SPIN_PARAM and GLOBAL_PARAM structures are now initialised within the __init__() methods rather
than being class variables. This bug was only uncovered by the auto-generated user functions. The
problem with them being class variables of the base class is that the objects are then the same for
all specific analyses.

All the wizard method 'event' args have been converted to keyword args.

This is for better remote control, for example by the GUI tests.

All the model-free GUI auto-analysis method 'event' args have been converted to keyword args.

This is for better remote control, for example by the GUI tests.

Import fixes for the spin viewer window.

Fixes to the model-free GUI auto-analysis test.

This includes an attempt to test out the spin viewer window code paths, thought that was stopped
short due to a bug in the spin viewer.

Converted many GUI functions expecting a wx.Event to have the event as an optional arg.

These are now keyword args defaulting to None. This allows remote control of GUI elements, which is
needed for the GUI tests.

Bug fix for the graphics.fetch_icon() method.

This was not returning the full path, just the relative path. This results in the failure to find
and load the icons when relax is run from any directory other than the installed directory.