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/wpm.c

@@ -55,7 +55,7 @@ int wpm_decode_object_id(
     uint8_t tag_number = 0;
     uint32_t len_value = 0;
     uint32_t object_instance = 0;
-    uint16_t object_type = 0;
+    BACNET_OBJECT_TYPE object_type = OBJECT_NONE;
     uint16_t len = 0;
 
     if (apdu && (apdu_len > 5) && wp_data) {
@@ -108,7 +108,7 @@ int wpm_decode_object_property(
         len += decode_tag_number_and_value(&apdu[len], &tag_number, &len_value);
         if (tag_number == 0) {
             len += decode_enumerated(&apdu[len], len_value, &ulVal);
-            wp_data->object_property = ulVal;
+            wp_data->object_property = (BACNET_PROPERTY_ID)ulVal;
         } else {
             wp_data->error_code = ERROR_CODE_REJECT_INVALID_TAG;
             return BACNET_STATUS_REJECT;