Fix (most) compilation warnings in Intel C++ Compiler (#38)

* Use BACNET_OBJECT_TYPE for all object type variables.

* Fix ICC "mixing enumerated type" warnings for assignments and parameters.

* Network Port: Use enums for state structs and remove erroneous bounds checks copy-pasted from IP_Subnet_Prefix setter.

* Fix ICC "unreachable statement" warnings.

* Fix ICC "unused variable" warnings when printing is disabled.

* Fix ICC "mixing enumerated type" warnings for struct initializers { 0 } by ensuring the first member is an integer type.

* Send_GetEvent_Global: Return 0 (invalid TSM invoke ID) instead of -1 = 255 (technically valid invoke ID) on failure.

* Fix ICC "pointless comparison" warnings.

* Fix wrong import in objects.c (memset being used).

* Fix signedness warnings and inconsistencies. Include -1 = 255 check in cov_address_get().

* Add some guards for BACAPP_LIGHTING_COMMAND to avoid errors/warnings.

* RPM test fixes

* Address requested changes. (#38)

src/bacnet/lighting.c

@@ -142,7 +142,11 @@ int lighting_command_decode(
         len =
             decode_enumerated(&apdu[apdu_len], len_value_type, &unsigned_value);
         if (len > 0) {
-            data->operation = unsigned_value;
+            if (unsigned_value <= BACNET_LIGHTS_PROPRIETARY_LAST) {
+                data->operation = (BACNET_LIGHTING_OPERATION)unsigned_value;
+            } else {
+                return BACNET_STATUS_ERROR;
+            }
         }
         apdu_len += len;
         /* Tag 1: target-level - OPTIONAL */