populate repo with files from ros_industrial/abb, add meshes/urdfs for 4400_l30
renamed abb directory to abb_experimental
cleanup files from renamed abb_experimental directory
removed files that previously exist in repo 'abb'
Merge pull request #1 from dpsolomon/master

Added 4400_l30.  Note the file structure does not follow the new standard( see http://ros.org/wiki/Industrial/Tutorials/SuggestedPackageLayoutNewRepositories ).  The pull request as an abb_common package which means that it can't coexist with the abb meta-package.  I will fix this in subsequent commits.