Adding support for absolute position inputs (GPS/LPS systems)
Fixed rosbag usage in test files.
Fixed rosbag usage in tests
Adding nomotion request service
Amcl: changed request_nomotion service name to request_nomotion_update.
navigation 1.10.2
TrajectoryPlannerROS: re-enforce min-rot-in-place-vel after acc limits applied.
TrajectoryPlanner: decelerate to goal position.
include default github .gitignore content
Added nav specific build directories.
Merge pull request #21 from ablasdel/patch-1

include default github .gitignore content
dwa_planner: fixed bug where robot failed to turn at start of plan.
The logic in question was lost in the groovy refactor.
dwa_local_planner: removed PreferForwardCostFunction to encourage turn-in-place at start of plan execution.
PreferForwardCostFunction was introduced in groovy.
navigation 1.10.3
costmap_2d: Added 'inf_is_valid' option for laserscan observations.
costmap_2d: footprint_padding param was ignored, now using.
costmap_2d: fixed #22 by slightly decreasing inscribed radius.
Merge pull request #23 from ros-planning/fix-stuck-when-close-to-obstacle

costmap_2d: fixed #22 by slightly decreasing inscribed radius.
NavFn: fixed #26, planned paths brush obstacles.
navfn: debugging help for previous commit fixing #26.
This commit is low priority, it is just all the debugging infrastructure I used when
researching the fix for #26.  It doesn't change anything for normal operation.