mk: add missing environment exports to make eclipse-projects of dry packages build

Signed-off-by: Ruben Smits <ruben.smits@intermodalics.eu>
mk: cleanup catkin generated files/directories after make eclips-project

Signed-off-by: Ruben Smits <ruben.smits@intermodalics.eu>
Merge pull request #14 from smits/groovy-devel

make eclipse-project issues
remove unnecessary usage of unicode strings (fix #12)
make rosunit use print_function for python 2 and 3 compatibility (#11)
use print function in rosunit (fix #11)
add changelogs
tag changelogs
1.9.46
update rosbuild to use move roslaunch-check script (ros/ros_comm#241)
update changelog
1.9.47
enable roslaunch args completion in rosbash