Merge pull request #57 from herbrechtsmeier/master

catkin.bbclass: Stage /usr/etc sysroot direcotry 

classes/catkin.bbclass

@@ -45,4 +45,10 @@ FILES_${PN}-dev += "\
     ${datadir}/${ROS_BPN}/*.template \
     "
 
+SYSROOT_PREPROCESS_FUNCS += "catkin_sysroot_preprocess"
+
+catkin_sysroot_preprocess () {
+    sysroot_stage_dir ${D}${prefix}/etc ${SYSROOT_DESTDIR}${prefix}/etc
+}
+
 BBCLASSEXTEND += "native"