relax SVN archive

Fix for the specific_fns.model_free unit tests for the results.read uf arg name change.

The directory is now specified via the 'dir' arg rather than 'directory'.

Updated the prompt and generic_fns package __all__ lists.

The auto-generated file and dir selection dialogs now have wildcards and styles.

This is provided through the new 'wiz_filesel_wildcard', 'wiz_filesel_style' and 'wiz_dirsel_style'
user function arg args which are then passed on to the file and dir selection GUI elements. All
user functions dealing with files and directories have been updated.

Updated the model-free auto-analysis GUI test for the new user function design.

A number of fixes for the BMRB GUI test for the new user function design.

This GUI test now passes.

The Value GUI element as a ComboBox can now handle input values which are not in the list.

This allows user functions with the 'wiz_combo_choices' arg arg set and the 'wiz_read_only' arg arg
of False to function. This is for the user to select from a list of pre-defined defaults, or input
their own value.

The GUI tests base execute_uf() method now runs all user functions in synchronous mode.

In combination with the previous gui_raise() change, this allows the GUI tests to actually fail when
a RelaxError occurs.

The gui_raise() function now simply re-raises the RelaxError when in test mode.

This allows the GUI test to properly fail.

Missing import required for temporary file deletion.

Removed all of the dir user function args in the BMRB GUI test.

These need to be part of the file argument, as the file and dir args are merged into one GUI
file selection element.