Needed for code generation
Do not generate GUID automatically when not needed
Automated updated JRU message definition to reference the correct MESSAGES.Message when considering external message definition (for instance, EURORADIO message)
This update also
  - rolled back manual changes concerning the mode of elements (from INOUT to OUT)
  - changed specific length and distance types to the generic MessageTypes.Length and MessageTypes.Distance
  - fixed a typo in one of the enumeration values of Q_BRAKE_CAPT_TYPE