relax SVN archive

Modified the relax_errors import statement to not use the * notation.

Removed the unused testing for the __builtin__ module.

The previous commit in this branch fixed the text "__builtins__", however the __builtin__ is no
longer imported by any part of relax and hence the test is unneccessary.

Removed the unused import of the __builtin__ module by the prompt.tab_completion module.

See the thread starting at https://mail.gna.org/public/relax-devel/2007-02/msg00003.html
(Message-id: <45DACFEA.7020108@...>) for a discussion of the issue.

The text "__builtins__" has been fixed and is now "__builtin__".

Removed the unused import of the __builtin__ module from the prompt.interpreter module.

See the thread starting at https://mail.gna.org/public/relax-devel/2007-02/msg00003.html
(Message-id: <45DACFEA.7020108@...>) for a discussion of the issue.

Removed the variable 'C_module_exp_fn' from __builtin__.

See the thread starting at https://mail.gna.org/public/relax-devel/2007-02/msg00003.html
(Message-id: <45DACFEA.7020108@...>) for a discussion of the issue.

Rathar than placing the 'C_module_exp_fn' variable into __builtin__ from the specific_fns.relax_fit
module, it is now placed into the global namespace of that module. The generic_fns.runs module then
simply imports the variable.

Removed the unneccessary usage of __builtin__.

See the thread starting at https://mail.gna.org/public/relax-devel/2007-02/msg00003.html
(Message-id: <45DACFEA.7020108@...>) for a discussion of the issue.

The following varibles have been shifted from __builtin__ to the global namespace of the 'io' module
as only this module was accessing them:
bz2_module
bz2_module_message
devnull_import
devnull_import_message

added rudimentary command line and tests for direct paths to tests cases

Added the RelaxErrors to the interpreter module.

Imported all the RelaxErrors and RelaxWarnings, as well as warn(), into the structure module.

Fixed the RelaxErrors in the 'relax' base file.