relax SVN archive

Fix for the unit test of reading of the amino acid sequence out of a protein NOE data file.

Updated the docstring of generic_fns.sequence.read(). This is now in the epydoc format.

Updated the docstring of the generic_fns.sequence.validate_sequence() function.

Another bug fix for the generic_fns.sequence.validate_sequence() function.

The mol, res, and spin column numbers are now passed into it.

Bug fix for the generic_fns.sequence.validate_sequence() function.

Completed the generic_fns.sequence.read() function.

Renamed valid_sequence() to validate_sequence() and called it from within the read() fn.

Fix for the generic_fns.sequence.read() function.

Converted the strip class method to a module function.

Added the missing import of relax_io.strip.