avoid falling over on windows path slashes, use cmake ones instead (#359)
avoid falling over on windows path slashes, use cmake ones instead (#359)

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