catkin_prepare_release: show tag name instead of plain version number (fix #528)
catkin_prepare_release: show tag name instead of plain version number (fix #528)

asmodehn/catkin,jack-oquin/catkin,meyerj/catkin,harmishhk/catkin,jack-oquin/catkin,wkentaro/catkin,wkentaro/catkin,thaddeustaylor/catkin,shyamalschandra/catkin,ros/catkin,meyerj/catkin,ros/catkin,harmishhk/catkin,ros/catkin,thaddeustaylor/catkin,beni55/catkin,thaddeustaylor/catkin,wkentaro/catkin,beni55/catkin,scpeters/catkin,jack-oquin/catkin,shyamalschandra/catkin,scpeters/catkin,harmishhk/catkin,shyamalschandra/catkin,beni55/catkin,asmodehn/catkin,asmodehn/catkin,scpeters/catkin,meyerj/catkin