relax SVN archive

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'.

The Value wizard page GUI element can now be set to a wx.SpinCtrl.

This is only allowed for integers.

Fix for the SetValue() methods of the sequence GUI wizard page GUI elements.

The value of None should be expected!

The default file name is now passed all the way into the RelaxFileDialog.

This is for the auto-generated GUI user functions.

Improvements to the Selector_dir wizard page GUI element.

The icon is now for a directory open and not file open, the tooltip is also fixed, and the default
value is now passed all the way through.