relax SVN archive

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.

Bug fix for the calling of the GUI user function objects.

The user function page update_args() method is now being called to update all the ComboBoxes with
the current relax data store data. Without this, the lists would be empty or out of date. A call
requiring a user function arg to be set on a read only ComboBox would then fail.

Bug fix for the Value GUI input element for the SetValue() method.

When None was being supplied, this method did nothing. This behaviour is incorrect! It should
instead blank the GUI element!

Removed the reinitialisation of the relax data store GUI object in the GUI test tearDown() method.

This is not needed as it is done by the data store reset anyway.

Removed a time.sleep() call which slows down the GUI tests by a significant amount.

This adds 0.5 seconds per user function which display info. For example this is 8 seconds for just
the Bmrb GUI tests! This delay is not necessary, so has been eliminated.

The user function docstrings are now created when the help system is invoked.

This prevents all user function docstrings from being built at the start, or any time the
interpreter class is instantiated. Instead the docstrings are created on demand. Therefore for
most relax usage, the docstrings for most user functions will be rarely built.

This decreases start times of ~6 seconds down to ~0.06 seconds!

The GUI tests are now recycling the GUI user function wizards and pages as well.

This required a number of modifications:
- The user function object wizard creation has been shifted into the create_wizard() method.
- The status.gui_uf_force_sync flag has been introduced to force synchronous operation of the
GUI user functions.
- The wx_wizard_run keyword arg has been added to the user function object to prevent the
automatic running of the wizard.
- The GUI test tearDown() base method no longer destroys the GUI or wizards, as they are needed
in subsequent tests.