relax SVN archive

The signed and signless data are now loaded using the same alignment ID. A single RDC has been
removed from the test_suite/shared_data/align_data/CaM/synth_rdc_abs RDC file which is negative in
the corresponding synth_rdc file. The signed RDCs are first loaded followed by the signless RDCs
which overwrite the original RDCs - all except for the single negative value with the absolute flag
turned off. The single negative RDC allows the tensor negative and positive lobes to be defined.