relax SVN archive

Shifted the physical constants h, hbar, and mu0 from the PipeContainer class to their own module.

Renamed the class RunContainer to PipeContainer and removed the inheritance from 'object'.

Renamed the data pipe object module (for the name change from 'run' to 'pipe').

Improved the object print out of the relax data storage object __repr__ method.

Modified the __reset__ method of the relax data storage object to remove all the dictionary items.

Added a variable to the relax data storage object for storing the name of the current data pipe.

Rewrote the __repr__() method of the relax data storage object.

Added a docstring for the __reset__() method of the Data class.

The Data class has been converted from an 'object' type to a 'DictType'.

The Singleton set up has been appropriately modified.

All the statements of the __init__() method of the Data class have been removed.

The __init__() method now does nothing (preventing problems with the Singleton set up). The Data
object has been given a docstring and the unused import statements deleted.