Removed the pointer data types for the REsult and Feedbach structures because they are already defined.

Changed the iri_action server main thread to differentiate between user cancelation and new goal preemption. When the goal is cancelled by the user, the stop function is called. However, it is not called when the current goal is preempted by a new goal.

 - do not stop action when preempted goal

  - updating author manifest

 - Remove {tags/branches} from the top level of repository
 - Also setup.bash dissapear as rosinstall will generate its own. A new setup.sh
   was created inside scripts dir to handle automatically paths needed for them.

  - adding preempt action to public API

  - removing ROS_NOBUILD from core pkgs

  - adding ROS_NOBUILD file to core packages

  - updating launch files
  - adding brl rviz config file

[segway_rmp200_odom]
  - updating pose and twist to stamped objects

[generic_odometry_node]
  - defining tf transform from odom to base_link

  - adding vector to manage all sequence action clients. Currently only using leds.
  - fisrt implementation of cancelCurrentGoals

[hrengagement_node]
  - uppdating ACTION_CLIENTS

[iri_action_server]
  - adding shutdown() and isStarted() to public API

  - fixing port name to Loquendo TTS

[iri_action_server]
  - fixing bug when client asks for preemption. Now preempting instead of aborting

  - adding setAborted and isActive methods to public API

[loquendo_tts_node]
  - removing actionlib as dependency, now using iri_action_server

[hrengagement_node]
  - adding MoveBase action to interact with no_collision_node

[no_collision_node]
  - first version to test:
    - node is getting data from Odometry, Laser
    - input action available
    - publishing twist to platform
    - first approach for movePlatform

- adding register callback functions

starting new version of iri_action_server based on ExecuteCallback instead of Goal/Preempt Callbacks