Merge branch 'master' into thermo

applications/solvers/heatTransfer/buoyantPisoFoam/UEqn.H

...tions/solvers/heatTransfer/buoyantPisoFoam/createFields.H

applications/solvers/heatTransfer/buoyantPisoFoam/pEqn.H

applications/solvers/heatTransfer/buoyantSimpleFoam/UEqn.H

...olvers/heatTransfer/buoyantSimpleFoam/buoyantSimpleFoam.C

...ons/solvers/heatTransfer/buoyantSimpleFoam/createFields.H

applications/solvers/heatTransfer/buoyantSimpleFoam/pEqn.H

...ntSource/timeActivatedExplicitMulticomponentPointSource.C

tutorials/heatTransfer/buoyantPisoFoam/hotRoom/0/alphat

tutorials/heatTransfer/buoyantPisoFoam/hotRoom/0/mut

tutorials/heatTransfer/buoyantPisoFoam/hotRoom/0/p

...als/heatTransfer/buoyantPisoFoam/hotRoom/system/fvSchemes

...ls/heatTransfer/buoyantPisoFoam/hotRoom/system/fvSolution

tutorials/heatTransfer/buoyantSimpleFoam/hotRoom/0/mut

tutorials/heatTransfer/buoyantSimpleFoam/hotRoom/0/p

...s/heatTransfer/buoyantSimpleFoam/hotRoom/system/fvSchemes

.../heatTransfer/buoyantSimpleFoam/hotRoom/system/fvSolution