Merge remote-tracking branch 'origin/master' into scheduler_activate_root

examples/CoolingHaloWithSpin/cooling_halo.yml

examples/HydrostaticHalo/README

examples/HydrostaticHalo/hydrostatic.yml

examples/HydrostaticHalo/makeIC.py

examples/HydrostaticHalo/run.sh

examples/HydrostaticHalo/test_energy_conservation.py

examples/IsothermalPotential/README

examples/IsothermalPotential/isothermal.yml

examples/IsothermalPotential/makeIC.py

examples/IsothermalPotential/run.sh

examples/IsothermalPotential/test.pro

examples/Makefile.am

m4/ax_cc_maxopt.m4

src/Makefile.am

src/active.h

src/cell.c

src/cell.h

src/cooling/const_lambda/cooling.h

src/debug.c

src/debug.h