First working verion of remote object

Fixed two bugs along the way:
- asynnet: ANETReadPtr now sets length to 0 if ther eis no data
- motorsec: if the motor does not start the status is set to error

asynnet.c

@@ -581,6 +581,7 @@ void *ANETreadPtr(int handle, int *length)
 
   con = findSocketDescriptor(handle);
   if (con == NULL) {
+    *length = 0;
     return NULL;
   } else {
     data = GetRWBufferData(con->readBuffer, length);