- add Precise i386 compatibility
- add Precise amd64 compatibility
ogre_tools: Moved almost all of ogre_tools out of here and into rviz/src/rviz/ogre_helpers. Only one class seemed to be used by more than just rviz, and bug-fixes to rviz were causing version churn in visualization_common which did not materially affect any other packages. The remaining class is STLLoader for loading *.stl files as Ogre meshes.