ENH: Updated solvers using fieldSources

applications/solvers/incompressible/pimpleFoam/UEqn.H

...ns/solvers/incompressible/simpleFoam/MRFSimpleFoam/UEqn.H

...solvers/incompressible/simpleFoam/SRFSimpleFoam/UrelEqn.H

applications/solvers/incompressible/simpleFoam/UEqn.H

...solvers/incompressible/simpleFoam/porousSimpleFoam/UEqn.H

applications/solvers/lagrangian/LTSReactingParcelFoam/UEqn.H

applications/solvers/lagrangian/LTSReactingParcelFoam/YEqn.H

...ications/solvers/lagrangian/LTSReactingParcelFoam/hsEqn.H

applications/solvers/lagrangian/LTSReactingParcelFoam/pEqn.H

...cations/solvers/lagrangian/LTSReactingParcelFoam/rhoEqn.H

...ons/solvers/lagrangian/LTSReactingParcelFoam/timeScales.H

applications/solvers/lagrangian/coalChemistryFoam/UEqn.H

applications/solvers/lagrangian/coalChemistryFoam/YEqn.H

applications/solvers/lagrangian/coalChemistryFoam/hsEqn.H

applications/solvers/lagrangian/coalChemistryFoam/pEqn.H

applications/solvers/lagrangian/coalChemistryFoam/rhoEqn.H

.../lagrangian/porousExplicitSourceReactingParcelFoam/UEqn.H

.../lagrangian/porousExplicitSourceReactingParcelFoam/YEqn.H

...lagrangian/porousExplicitSourceReactingParcelFoam/hsEqn.H

.../lagrangian/porousExplicitSourceReactingParcelFoam/pEqn.H