relax SVN archive

Shifted a check from the pipe.create front end to the back end.

Tests do not belong in the front end! And this is not compatible with the new user function design.

Removed the pipe user function class import and instantiation from the interpreter object.

This will be re-introduced later with a new auto-generation architecture, taking the info from the
user_function data object.

This should hurt!! Shifted the pipe module from the prompt to user_functions package.

This is in preparation for the full conversion of this user function class into the new
auto-generation design. relax will be broken for a while now!

Added a unit test for the contents of the user_function package.

The unit test _user_functions package is now actually a package!

Created a unit test package for the user_function package.

Shifted the Uf_info singleton into the new user_functions.data module.

This will avoid a lot of circular imports.

Created a module for setting up all of the user function data.

This is just a test, so probably will not be permanent.

Created the Uf_info singleton class for holding all of user function data.

Created a number of special objects for the user function data storage.