relax SVN archive

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.

Merged revisions 15906-15907 via svnmerge from
svn+ssh://bugman@.../svn/relax/1.3

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r15906 | bugman | 2012-05-03 16:29:16 +0200 (Thu, 03 May 2012) | 6 lines

Fix for the Base_value ResetChoices() method.

The recent simplification was failing as the ComboBox.Insert() method could not handle the position
being set to sys.maxint, unlike most other of its methods.
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r15907 | bugman | 2012-05-03 18:14:11 +0200 (Thu, 03 May 2012) | 8 lines

Big bug fix for the test suite!

One of the state system tests was removing the frame order analysis from the
generic_fns.pipes.VALID_TYPES list with a pop() call. But this change is permanent. So in the
later Bmrb.test_bmrb_rw GUI test, the GUI fails as this list is used in the pipe.create GUI user
function interface and it no longer matches the corresponding PIPE_DESC_LIST structure!
........