Merge branch 'github-rebo-bugfix' of https://github.com/CF17/lammps into test-rebo

# Conflicts:
#	examples/airebo/log.23Jun17.airebo-m.g++.1
#	examples/airebo/log.23Jun17.airebo-m.g++.4
#	examples/airebo/log.23Jun17.airebo.g++.1
#	examples/airebo/log.23Jun17.airebo.g++.4
#	examples/airebo/log.27Nov18.airebo-m.g++.1
#	examples/airebo/log.27Nov18.airebo-m.g++.4
#	examples/airebo/log.27Nov18.airebo.g++.1
#	examples/airebo/log.27Nov18.airebo.g++.4
#	examples/airebo/log.29Jun18.airebo-m.g++.1
#	examples/airebo/log.29Jun18.airebo-m.g++.4
#	examples/airebo/log.29Jun18.airebo.g++.1
#	examples/airebo/log.29Jun18.airebo.g++.4