relax SVN archive

Converted the regular expression documentation to the new system.

Fixes for the value user function documentation.

The arg documentation was not fully converted.

The value user function pages now use the new documentation system.

Converted all of the value user functions to the new documentation system.

The structure user function pages are now fully using the new user function documentation.

Converted all of the documentation to the new system for the structure user functions.

White space fixes for some comments.

Basic docstring changes.

Improvements to the documentation of the structure user functions.

Simplified the window titles for the user functions to be "relax: " plus the user function name.