cmake HAVE_LINUX_JOYSTICK_H examples

vrpn/vrpn CMakeLists.txt :767 

check_include_file_cxx(linux/joystick.h HAVE_LINUX_JOYSTICK_H)

jizhang-cmu/ground_based_autonomy_basic src/joystick_drivers/joy/CMakeLists.txt :17 

check_include_files(linux/joystick.h HAVE_LINUX_JOYSTICK_H)