Minor fixes to tractioncvspace: - repeat count for POM write packet was not effective. - ignores NACK response from the decoder. These were abused by other decoders as ACK in an earlier verion of the standard.
Minor fixes to tractioncvspace:
- repeat count for POM write packet was not effective.
- ignores NACK response from the decoder. These were abused by other decoders as ACK in an earlier verion of the standard.

bakerstu/openmrn,bakerstu/openmrn,bakerstu/openmrn,bakerstu/openmrn,bakerstu/openmrn,bakerstu/openmrn