[config.sh] Homogeneize ubuntu-16.04 and ubuntu-18.04.

doc/config/ubuntu-16.04-kinetic.sh

 export INSTALL_HPP_DIR=$DEVEL_HPP_DIR/install
+export ROBOTPKG=/opt/openrobots
+export ROS=/opt/ros/kinetic
 
 if [ -f $INSTALL_HPP_DIR/setup.bash ]; then
     source $INSTALL_HPP_DIR/setup.bash
 else
-    source /opt/ros/kinetic/setup.bash
+    source $ROS/setup.bash
     export ROS_PACKAGE_PATH=$INSTALL_HPP_DIR/share:$ROS_PACKAGE_PATH
     export CMAKE_PREFIX_PATH=$INSTALL_HPP_DIR:$CMAKE_PREFIX_PATH
     export LD_LIBRARY_PATH=$INSTALL_HPP_DIR/lib:$LD_LIBRARY_PATH
@@ -15,11 +17,11 @@ if [ -f "${INSTALL_HPP_DIR}/etc/hpp-tools/bashrc" ]; then
     source "${INSTALL_HPP_DIR}/etc/hpp-tools/bashrc"
 fi
 
-# Make sure that /opt/ros/kinetic/setup.bash is in the ROS_PACKAGE_PATH,
+# Make sure that /opt/ros/kinetic is in the ROS_PACKAGE_PATH,
 # otherwise, you should add it by hand in the line below.
-export ROS_PACKAGE_PATH=$ROS_PACKAGE_PATH:/opt/openrobots/share
 export PYTHONPATH=$INSTALL_HPP_DIR/lib/python2.7/site-packages:$INSTALL_HPP_DIR/lib/python2.7/dist-packages:$PYTHONPATH
-export CMAKE_PREFIX_PATH=$CMAKE_PREFIX_PATH:/opt/openrobots
-export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/opt/openrobots/lib
+export ROS_PACKAGE_PATH=$ROS_PACKAGE_PATH:$ROBOTPKG/share
+export CMAKE_PREFIX_PATH=$CMAKE_PREFIX_PATH:$ROBOTPKG
+export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$ROBOTPKG/lib
 export PATH=$INSTALL_HPP_DIR/sbin:${PATH}
-export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/opt/openrobots/lib/pkgconfig
+export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:$ROBOTPKG/lib/pkgconfig

doc/config/ubuntu-18.04-melodic.sh

@@ -14,7 +14,7 @@ if [ -f $INSTALL_HPP_DIR/setup.bash ]; then
 else
     source $ROS/setup.bash
 fi
-# Make sure that /opt/ros/melodic/setup.bash is in the ROS_PACKAGE_PATH,
+# Make sure that /opt/ros/melodic is in the ROS_PACKAGE_PATH,
 # otherwise, you should add it by hand in the line below.
 export ROS_PACKAGE_PATH=$INSTALL_HPP_DIR/share:$ROBOTPKG/share:$ROS_PACKAGE_PATH