relax SVN archive

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

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

Created a sample script for BMRB data deposition.
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The specific_fns get_specific_fn() function now determines the data pipe type, if not supplied.

Improved the value.set user function definitions.