relax SVN archive

Improvement of the RelaxUnknownParamError printout.

Fully implemented the generic_fns.align_tensor.init() function.

Fixed a number of unit tests which were using 'd_scale' rather than 'scale' as an arg.

Fixed the generic_fns.align_tensor.init() args and docstring.

Added 2 missing RelaxError imports.

Wrote 2 unit tests for the scale and angle_units args to the align_tensor.init() user function.

Added the scale and angle_units args to the align_tensor.init() user function.

Placed the align_tensor user functions into the interpreter namespace.

Implemented the framework for the unit tests of the generic_fns.align_tensor module.

Implemented 10 unit tests for fns of the generic_fns.align_tensor and prompt.align_tensor modules.