ip.c: ignore IGMP protocol errors for now
metadata.c: clean up json error handling in ss_metadata_prepare_eth
metadata.c: clean up json in  ss_metadata_prepare_ip
metadata.c: clean up json in ss_metadata_prepare_ioc
metadata.c: clean up json in ss_metadata_prepare_frame
metadata.c: clean up json in ss_metadata_prepare_syslog
metadata.h: include rule fire name in json
netflow.c: include rule fire name in json
netflow_format.c: clean up json in ss_metadata_prepare_netflow
netflow_format.h: include rule fire name in json
nn_queue.c: ss_nn_queue_send: use atomic tx_messages counter
re_utils.h: remove unused header
sdn_sensor.c: improve the TSC based stats timer
sdn_sensor.c: call ss_conf_destroy in the fatal_signal_handler
sdn_sensor.h: remove unused timer constant
sensor_conf.c: add improved TSC stats timer handling
sensor_conf.c: add more logic in ss_conf_destroy
sensor_conf.c: add ss_conf_mdb_init
sensor_conf.h: add lmdb support
sensor_conf.h: add TSC init counter