Fix compile errors in kobuki_gazebo_plugins with Kinetic and Gazebo7

[rohbotics]

Kinetic moved to Gazebo7 which requires c++11 and has many changes to the API, this pull request makes koubki_gazebo_plugins compile with no errors on kinetic and Ubuntu 16.04.

This should be pulled into a separate branch for kinetic.

[stonier]

This looks good. I created the kinetic branch off jade. Could you resend this PR to the kinetic branch?

[ghost]

Thanks @rohbotics, these changes allowed me to compile Kobuki, although it seems I have not been receiving the same errors as others.

For one, I never received an error message requiring C++11 to be declared (like in #44), so I didn't modify my CMakeList.txt file.

I also received error messages referring to deprecated functions GetRange() and GetContact() - I fixed these by removing 'Get' from their names to put them in accordance to their current names (I found this link useful in finding their current names).

Edit: I just realized that the GetRange() and GetContact() messages are warnings, not errors. The changes I've made in the .cpp code to remove these warnings still allowed Kobuki to build.

[rohbotics]

@cerebro-deux What platform are you running on (OS, ROS version, Arch) ?

Thanks for the link, I will try to see if I can get rid of some of the warnings on the build.

[ghost]

@rohbotics I'm using Ubuntu Xenial, with ROS Kinetic. I've built Kobuki (and TurtleBot) following the instructions here, of course with your fixes. ROS and Gazebo were installed using apt-get in Ubuntu, but Rocon, Kobuki and TurtleBot were built from source.

[rohbotics]

@stonier Rebased in #46

@cerebro-deux, It's interesting that you are not getting the compiler error about C++11 features, I tried on a fresh install of Xenial, and the first error in the log was

In file included from /usr/include/c++/5/random:35:0,
                 from /usr/include/ignition/math2/ignition/math/Rand.hh:20,
                 from /usr/include/ignition/math2/ignition/math.hh:18,
                 from /usr/include/sdformat-4.0/sdf/Param.hh:34,
                 from /usr/include/sdformat-4.0/sdf/Element.hh:24,
                 from /usr/include/sdformat-4.0/sdf/sdf.hh:5,
                 from /usr/include/gazebo-7/gazebo/common/Battery.hh:25,
                 from /usr/include/gazebo-7/gazebo/common/common.hh:8,
                 from /usr/include/gazebo-7/gazebo/gazebo_core.hh:19,
                 from /usr/include/gazebo-7/gazebo/gazebo.hh:20,
                 from /home/rohan/catkin_ws/src/kobuki_desktop/kobuki_gazebo_plugins/include/kobuki_gazebo_plugins/gazebo_ros_kobuki.h:45,
                 from /home/rohan/catkin_ws/src/kobuki_desktop/kobuki_gazebo_plugins/src/gazebo_ros_kobuki_loads.cpp:36:
/usr/include/c++/5/bits/c++0x_warning.h:32:2: error: #error This file requires compiler and library support for the ISO C++ 2011 standard. This support must be enabled with the -std=c++11 or -std=gnu++11 compiler options.
 #error This file requires compiler and library support \

Maybe you have a non-default version of gcc, but I am not sure.

[ghost]

@rohbotics - Yes, I have a fresh install of Xenial too. This is what came out of gcc --version:
gcc (Ubuntu 5.3.1-14ubuntu2.1) 5.3.1 20160413

In any case, Kobuki and Turtlebot were able to build.