KM3NET BROADCAST : - locking_enable in wr_link_on -> After unplug/plug or disable/enable the WR master port, the CLB stay locked in Uninitialized servo state because the spll stays locked.
		   - New WR state WRS_BROADCAST -> added for km3net monitoring via net.wr_st_gen variable.
		   - wr_servo_reset if errcount > 5 -> to play in a safe way.