relax SVN archive

Fixed all calls to diffusion_tensor.init().

Bug fix for the fixed arg test of the diffusion_tensor.init() user function.

Fixes for the docstring of the diffusion_tensor.init() user function.

Converted the fixed arg to the diffusion_tensor.init() user function to be a bool.

Fix for the errors arg test of the align_tensor.init() user function.

Converted the align_tensor.init() errors argument to a bool.

Epydoc fixes.

Updated the 'basic_single_pipe.bz2' to be compatible with the current relax revision.

Added a relax script to regenerate 'test_suite/shared_data/saved_states/basic_single_pipe.bz2'.

This can be used when ever this saved state becomes incompatible with relax.

load_state() now throws a RelaxError when the state is incompatible.

The error says that the relax version in incompatible.