providing the octomap-ros recipe

After configuring octomap-ros, the recipe modifies the generated
files to address the problem in #176. However, it does not solve
the root of this cause.
As #176 is similar to #175, this preliminary solution is very
similar to the preliminary solution for #175.

depthimage-to-laserscan: initial commit

navigation recipes, updates and adding to packagegroup

The patch to check for CATKIN_ENABLE_TESTING has been included in
version 1.5.14.

This commit includes all navigation packages except robot_pose_ekf.
The robot_pose_ekf requires bfl, which we could not provide yet.

pcl-conversions, pcl-ros, depth-image-proc, rgbd-launch and freenect-launch

some recipes and acknowledgement

pcl: initial commit (resolves #135)

Based on initial work by bulwahn: https://github.com/bulwahn/meta-ros/tree/pcl-v4
Extensively discussed at #135

recipes for collada-urdf

After configuring collada-urdf, the recipe modifies the generated
files to address the problem in #175. However, it does not solve
the root of this cause.

libfreenect: force libraries always into /usr/lib (resolves #187,#188)

libfreenect: generalizing lib reference (resolves #185)

freeglut, libfreenect and freenect-camera

Recipes for orocos-kdl, kdl-conversions, tf-conversions, kdl-parser and robot-state-publisher - reviewed in #181