Added support of tracking two 5 DoF tools with one port. The only changes necessary were in the DiscoverWiredTools() method. The implementation of the NDI protocol was not 100 percent correct. The PHSR(OCCUPIED, portHandle) method has to be called two times (one time per channel). Subsequently, PHSR(ALL, portHandle) is called to retrieve all port handles. Signed-off-by: Martin Klemm <martin.klemm@hs-offenburg.de>