Merge pull request #227 from bulwahn/master

python-empy: using archive with proper version (resolves #222)
bfl: initial commit
robot-pose-ekf: initial commit
Merge pull request #228 from KristofRobot/robot-pose-ekf

new recipe for navigation/robot_pose_ekf
adjusting to cmake.bbclass changes in OE-Core (resolves #229)
Merge pull request #230 from KristofRobot/229

adjusting to cmake.bbclass changes in OE-Core (resolves #229)