updating to new release 0.2.1
updating to new release 0.2.1

--HG--
extra : close : 1
extra : convert_revision : svn%3Aeb33c2ac-9c88-4c90-87e0-44a10359b0c3/stacks/driver_common/tags/latest%4026500

ros/dynamic_reconfigure,ros/dynamic_reconfigure,ros/dynamic_reconfigure