relax SVN archive

Eliminated the self._test_dir test class variable.

The system and GUI tests will now use the same script path.

Removed the recently added GUI test 'scripts' directory.

The GUI tests will from now on use the system test scripts directly (after they have been modified
to use self._execute_uf() for executing the user functions).

Modified and renamed the self._execute_uf() method so that it will work with the system test scripts.

The file and directory arguments are now merged, as required by the GUI user function pages.

Converted the bmrb_rw.py system test script to use the new prompt self._execute_uf() method.

The GUI test framework will need slight modification to use this script directly still.

Created a special private method for the prompt/script UIs for executing user functions.

This self._execute_uf() method will be used for the sharing of scripts in the system and GUI tests.

Refactored the system and GUI tests for code sharing.

The GUI tests now can inherit tests from the system tests. This is done for the BMRB system tests,
both of which now run as GUI tests. For this, a test class specific script_exec() method has been
added. For the system tests, it passes the system tests script into the interpreter. For the GUI
tests, it executes the script using the function locals so that the GUI test execute_uf() method is
accessible.

Created a directory for GUI test 'scripts' to match the system test layout and scripts.

The idea is to mirror the system test script setup, at least for the scripts. The GUI scripts will
be different by pushing the user functions through the execute_uf() method, but otherwise should
be identical to the system tests. This will allow, in the future, possible code sharing for the
checking of the results of the script execution.

More fixes for the Sequence.GetValue() method - it now really handles single values correctly.

Fix for the new py_to_gui() function.

Created a pair of Python object to GUI string and reverse conversion functions.