fix catkin_prepare release if git repo has multiple remotes (fix #450)
fix catkin_prepare release if git repo has multiple remotes (fix #450)

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