relax SVN archive

Added error checking to the Uf_container to eliminate typo coding mistakes.

This checks that a variable is not set twice (copy and paste error).

Fixes for some more short titles in the user functions.

Fix for the select.spin and deselect.spin user function short titles.

Converted the fix user function to the auto-generation design.

The object-locked and object-unlocked Oxygen icons have been combined to create a wizard graphic
for this user function.

Created wizard graphics for the eliminate user function.

Converted the eliminate user function to the auto-generation design.

Function arguments are now ignored as well in the auto-generated GUI user functions.

Created icons and wizard graphics for the auto-generated dx user functions.

Converted the dx user functions to the auto-generation design.

Some of the checks at the prompt level had to be shifted into the back end, where they belong.

Fixes for the SpinCtrl version of the Value wizard page GUI element.

The GetValue(), SetValue(), and other methods were not doing anything for the element_type of
'spin'.