relax SVN archive

The debugging flag now disables the execution locking mechanism.

The acquire() and release() calls are also recorded in the 'lock.log' file to help with lock
debugging.

Before starting final run of dauvergne_protocol, each pipe that possibly was created is destroyed.

This will help to run the full automatic model-free analysis of the GUI.

The Grace code can now handle dictionary type data.

The Monte Carlo simulation code can now handle dictionary type data.

Converted the specific relaxation curve fitting code to use the dictionary data structures.

Switched __errors_repl() to use dictionaries rather than lists.

The execution lock is released by the interpreter in all Error situations.

Security fix - execfile() is no longer used to run relax scripts.

Instead a custom function exec_script() is being used to call runpy.run_module(). exec_script()
also locks and releases the relax execution lock before and after operation.

The status object is not being initialised on import, to allow controlled setup upon start up.

The status object is being initialised and setup before execution of the main relax class.