private static boolean hasExternalAddressMatch(ExternalLocation extLoc1,
			ExternalLocation extLoc2) {
		Address addr1 = extLoc1.getAddress();
		return addr1 != null && addr1.equals(extLoc2.getAddress());
	}
Generate relative rank when a non-default name match occurs.
Method should not be invoked when either location symbol has a default source type.
@param targetAddr
@param targetNamespace
@param targetName
@param targetOrigImportedName
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/util/SimpleDiffUtility.java