relax SVN archive

Created an algorithm for wrapping table columns to fit within status.text_width.

This if for the prompt user function docstring tables. The columns are now dynamically wrapped so
that the table will not be wider than the given width. For example the value.set user function
description table would normally have a total width of 238 characters, but this now fits within one
screen of text under all operating systems.

Created two unit tests for the _build_doc() methods of the prompt user function objects.

This is for the prompt uf class objects and the user function objects themselves. The _build_doc()
methods are used to generate the prompt help strings.

Second attempt at fixing the problem described at r16578.

Bug fix for the Desc_container.add_*() methods - the lists, prompts, and tables sometimes fail.

If there is no text in front of these elements, the checks fail.

Converted all of the OpenDX user functions to the new Desc_container design.

This tests out the use of 'additional' outside documentation.

Renamed a section in the user function class prompt help string.

Improved the user function class prompt help string.

The user function list now uses bold text, and the user function title is also now given.

The prompt help string for user function classes now includes info about the member user functions.

The Uf_info.uf_loop() method can now restrict the looping over a given user function class.

Large improvements to the prompt help strings for the user function classes.

These are now formatted with section using bold text.