pcl-ros: updating to 1.1.8
image-pipeline: updating to 1.1.9
octomap-ros: updating to 0.3.1
vision-opencv: updating to 1.10.17
diagnostics: updating to 1.8.3
pcl-conversions: updating to 0.1.6
roslint: initial commit

roslint is needed for the latest version of xacro.
xacro: updating to 1.8.5

The version 1.8.5 incorporates the local patch, and hence the local
patch is removed. Furthermore, it now requires roslint.
rospy-tutorials: updating Upstream-Status of patch
Merge pull request #261 from bulwahn/updates

Updates till early May 2014