+ltt-control 0.73 adds per-channel parameter "switch_timer" (periodic buffer
+flush timer interval).<br>
+LTTV 0.12.20 fixes a dependency on non-standard __SIZEOF_LONG__. Uses __WORDSIZE
+instead. Should fix some 32-bit builds.<br>
+ltt-control 0.74 fixes a missing return value from liblttctl.<br>
+LTTng 0.168 makes periodic flush energy-efficient, adds cpu idle notifiers for
+x86_32, x86_64 to deal with periodic flush vs idle interaction (other
+architectures are todo). Also fix a ltt-relay-vfs file close bug, increase
+default vm_state channel subbuffer size, fix ltt-ascii so it compiles after
+cleanup (ltt-ascii is still experimental, will need to be adapted to new
+periodic flush scheme).<br>
+LTTng 0.169 fixes trace teardown.<br>
+LTTng 0.170 fixes kref issues (since refactoring) and cpu hotplug vs trace
+teardown issues. Simplification of trace creation/remove locking scheme.
+Passes test of concurrent CPU hotplug, markers arm/disarm and trace
+create/delete in loops for minutes.<br>