add lttng_tools finder

Change-Id: Ieb1b63909a49e35a34f29fa4003cb290105c611b
Reviewed-on: http://gerrit.aldebaran.lan/41626
Reviewed-by: dmerejkowsky <dmerejkowsky@aldebaran-robotics.com>
Tested-by: gerrit
qisys.qixml: support unicode too

Change-Id: I68dbd576bb0fbb5987677c4ae7a92f53528fe317