Merge pull request #4315 from jack-oquin/master

add openni_camera and openni_launch docs and sources to Indigo
freenect_stack: 0.3.2-0 in 'indigo/distribution.yaml' [bloom]
openni_camera: 1.9.2-1 in 'indigo/distribution.yaml' [bloom]
Merge pull request #4316 from jack-oquin/bloom-freenect_stack-1

freenect_stack: 0.3.2-0 in 'indigo/distribution.yaml' [bloom]
Merge pull request #4317 from jack-oquin/bloom-openni_camera-0

openni_camera: 1.9.2-1 in 'indigo/distribution.yaml' [bloom]
roll back version of ogre to 1.8 on Trusty to not conflict with gazebo
Merge pull request #4319 from ros/ogre_rollback_trusty

roll back version of ogre to 1.8 on Trusty to not conflict with gazebo