relax SVN archive

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.

Import fixes for the change of r16366, whereby the gui.misc module was split up.

Spun out the GUI sting conversion functions from the gui.misc module into the new string_conv module.

This set of functions is now large and diverse enough to justify a separate module, as the remaining
three functions of gui.misc have nothing to do with GUI strings.

The Sequence GUI element now better handles single values in the GetValue() method.

Merged revisions 16356 via svnmerge from
svn+ssh://bugman@.../svn/relax/1.3

........
r16356 | bugman | 2012-05-21 09:37:25 +0200 (Mon, 21 May 2012) | 3 lines

Created a sample script for BMRB data deposition.
........