Some renamings: TMR_LOCK->TMR_LOCK_MAIN_TIMER, TMR_UNLOCK->TMR_UNLOCK_MAIN_TIMER, Port_TimerLock->Port_TimerLockMainTimer, Port_TimerUnlock.>Port_TimerUnlockMainTimer.
[config.h] Added TMR_LOCK_DL_TIMER/TMR_UNLOCK_DL_TIMER function-like macros.
[uart_bif] Added 'KnxLL_TimeoutCB' callback.