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/bacdcode.h

@@ -172,44 +172,44 @@ extern "C" {
 /* returns the number of apdu bytes consumed */
     int decode_object_id(
         uint8_t * apdu,
-        uint16_t * object_type,
+        BACNET_OBJECT_TYPE * object_type,
         uint32_t * object_instance);
 
     int bacnet_object_id_decode(
         uint8_t * apdu,
         uint32_t len_value,
-        uint16_t * object_type,
+        BACNET_OBJECT_TYPE * object_type,
         uint32_t * instance);
     int bacnet_object_id_application_decode(
         uint8_t * apdu,
         uint16_t apdu_len_max,
-        uint16_t * object_type,
+        BACNET_OBJECT_TYPE * object_type,
         uint32_t * object_instance);
     int bacnet_object_id_context_decode(
         uint8_t * apdu,
         uint16_t apdu_len_max,
         uint8_t tag_value,
-        uint16_t * object_type,
+        BACNET_OBJECT_TYPE * object_type,
         uint32_t * instance);
 
     int decode_context_object_id(
         uint8_t * apdu,
         uint8_t tag_number,
-        uint16_t * object_type,
+        BACNET_OBJECT_TYPE * object_type,
         uint32_t * instance);
 
     int encode_bacnet_object_id(
         uint8_t * apdu,
-        int object_type,
+        BACNET_OBJECT_TYPE object_type,
         uint32_t instance);
     int encode_context_object_id(
         uint8_t * apdu,
         uint8_t tag_number,
-        int object_type,
+        BACNET_OBJECT_TYPE object_type,
         uint32_t instance);
     int encode_application_object_id(
         uint8_t * apdu,
-        int object_type,
+        BACNET_OBJECT_TYPE object_type,
         uint32_t instance);
 
 /* from clause 20.2.8 Encoding of an Octet String Value */