relax SVN archive

Import spelling mistake fix.

Big changes in how the automatic model-free protocol is executed.

The call to gui_bieri.execution.calc_modelfree.start_modelfree() has been eliminated. This has been
replaced by a call to self.execute(). This new method assembles the data required for the protocol
from the relax data store (by calling self.assemble_data() which doesn't exist yet), and then starts
and stores the thread which is executing dAuvergne_protocol.

Removed all the model-free code from the controller module.

Added the empty class Thread_container to be used to store the calculation thread info.

Added a list (self.calc_threads) for holding the calculation thread IDs.

This can be used for controlling the threads by the controller window.

Simplified the local variable names in add_execute_relax().

The following have been renamed and shifted into the local namespace:
self.label_5_copy_1_copy_3 -> label
self.relax_start_modelfree -> button
exec_relax_copy_1_copy_3 -> sizer

Added a docstring and comment to the cancel_calculation() method (which does nothing right now).

The controller close button is now always accessible.

The controller close button now works better.

The method close_log() is now called handler_close(). Instead of calling self.Destroy(), it now
calls self.Close() allowing the controller to be re-opened.

Added access to the relax controller from the main window.

The 'View' menu has been created with the single entry 'Controller'. This has a new oxygen icon.
The menu entry executes the show_controller() method which simply calls self.controller.ShowModal().
The controller will need to be modified to be universally accessible and closable at any time.