rtt_roscomm: added newline characters in package.xml files created by create_rtt_pkg
Removed all dependencies to rtt and ocl in catkin_package()

Packages that want to use RTT always have to call find_package(Orocos-RTT ...).
Merge pull request #37 from jhu-lcsr-forks/remove-catkin-depends-on-rtt-and-ocl

Removed all dependencies to rtt and ocl in catkin_package()