PD to ignore reply from other PD on same address #112
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For OSDP auto addressing (https://github.com/schmida2/libosdp/blob/osdp-extension-autoaddr/OSDP_Extension-AutoAddressingProtocol.md) it happens that initially multiple PDs linger on the same bus address.
This change ensures that PDs do not react to a reply from another PD on the same address.
This change does not harm "normal" bus operation; it adds some robustness for unusual cases.