relax SVN archive

Implemented the errors arg unit test for the align_tensor.init() user function.

Added the missing imports.

Implemented the param_types arg unit test for the align_tensor.init() user function.

Implemented the params arg unit test for the align_tensor.init() user function.

Created the Align_tensor class for the implementation of the align_tensor user functions.

Some fixes for the prompt.align_tensor unit tests.

Added the shell of the alignment tensor unit test base class.

Added the framework for the unit tests of the align_tensor.x() user functions.

Added prototype user functions for loading the alignment tensor and its errors.

Added the N-state model to the list of data pipe types.

Now a data pipe corresponding to this model can be created.