DALI: Added dSUID duplicate checker as last resort for sorting out bad devices...
DALI: Added dSUID duplicate checker as last resort for sorting out bad devices with non-unique-GTIN/SN. If any two bus devices get the same dSUID, revert both of them to dSUID derived from short address, not GTIN/SN. Also fixed hardwareGUID(): will only return something when deviceInfo is considered valid (but not necessarily used for dSUID, in devinf_maybe/devinf_notForID cases)
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