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/wp.c

@@ -94,7 +94,7 @@ int wp_decode_service_request(
     int tag_len = 0;
     uint8_t tag_number = 0;
     uint32_t len_value_type = 0;
-    uint16_t type = 0; /* for decoding */
+    BACNET_OBJECT_TYPE type = OBJECT_NONE; /* for decoding */
     uint32_t property = 0; /* for decoding */
     uint32_t unsigned_value = 0;
     int i = 0; /* loop counter */
@@ -106,7 +106,7 @@ int wp_decode_service_request(
             return -1;
         }
         len += decode_object_id(&apdu[len], &type, &wpdata->object_instance);
-        wpdata->object_type = (BACNET_OBJECT_TYPE)type;
+        wpdata->object_type = type;
         /* Tag 1: Property ID */
         len += decode_tag_number_and_value(
             &apdu[len], &tag_number, &len_value_type);