+2018-04-30 lttng-tools 2.9.9 (CERN announces WWW protocols will be free)
+ * Add DBG statement for TCP keep-alive options
+ * Fix: failure to launch agent thread is not reported
+ * Fix: agent may not be ready on launch
+ * Fix: lttng logs nanoseconds
+ * Fix: stream_per_chan_id_ht should allow duplicates
+ * Fix: relayd send_command() util not logging on failure
+ * Fix: kernel snapshot handling of EAGAIN
+ * Fix validate_trace_empty test check
+ * Fix: hold consumer socket lock for consumer_send_msg
+ * Fix: use off_t type for lseek function return value to avoid overflow
+
2018-03-26 lttng-tools 2.9.8 (Purple Day)
* Fix: set errno with value from SO_ERROR on error.
* Fix: missing value handling for lttng_event_context_type