(irtmodel.l, test-irt-motion.l) : Fix link access in ik fail log and add test code for it. This bug is reported in https://github.com/jsk-ros-pkg/jsk_roseus/issues/139
(irtmodel.l, test-irt-motion.l) : Escape string link name and add test for string-name case
Merge remote-tracking branch 'origin/master' into fix_ikfail_log_link_access
(test-irt-motion.l) : Set *sample-robot* instead of *robot* to avoid conflict
Merge pull request #101 from snozawa/fix_ikfail_log_link_access

Merged.