added /ardrone/odometry topic and corresponding "odom" tf_frame
added linear velocity to odometry message
Get GPS info
Merge branch 'gps' of https://github.com/lesire/ardrone_autonomy into gps
Moved all .patch files to ARDroneSDK
Remove unused patch
Merge remote-tracking branch 'v01d/catkin' into gps_test

Conflicts:
	src/ardrone_driver.cpp