relax SVN archive

Fix for the call to noe.read_restraints() in test_read_xplor_rna().

Final fixes for the rna_seq() sequence generation method.

Another bug fix for the rna_seq() sequence generation method.

Bug fix in the rna_seq() method.

Activated the Noe_restraints system test framework.

Completed the test_read_xplor_rna() system test.

Checks for the restraint list have now been added.

Renamed all the noe.read_constraints() references in the unit tests to noe.read_restraints().

The RNA sequence of the noe_rna_hbond.dat file is now generated through a new class method.

Renamed 'constraints' to 'restraints' for the NOEs.

Added the system test framework for NOE restraint reading tests.

This includes one test for the reading of RNA H-bond restraints from an Xplor formatted input file.