updates/improvements to the cloud IO system and using new constants

.../solvers/lagrangian/coalChemistryFoam/coalChemistryFoam.C

...tions/solvers/lagrangian/coalChemistryFoam/createClouds.H

...ian/porousExplicitSourceReactingParcelFoam/createClouds.H

...actingParcelFoam/porousExplicitSourceReactingParcelFoam.C

...ions/solvers/lagrangian/reactingParcelFoam/createClouds.H

...olvers/lagrangian/reactingParcelFoam/reactingParcelFoam.C

src/lagrangian/basic/Cloud/CloudIO.C

src/lagrangian/coalCombustion/CoalCloud/CoalCloud.C

src/lagrangian/coalCombustion/CoalCloud/CoalCloud.H

src/lagrangian/coalCombustion/CoalCloud/defineCoalCloud.C

src/lagrangian/coalCombustion/Make/files

...lagrangian/coalCombustion/include/createCoalParcelTypes.H

src/lagrangian/dieselSpray/parcel/parcelIO.C

src/lagrangian/dieselSpray/spray/spray.C

src/lagrangian/dieselSpray/spray/spray.H

src/lagrangian/dsmc/clouds/Templates/DsmcCloud/DsmcCloud.C

src/lagrangian/dsmc/clouds/Templates/DsmcCloud/DsmcCloud.H

src/lagrangian/dsmc/clouds/Templates/DsmcCloud/DsmcCloudI.H

src/lagrangian/dsmc/clouds/derived/dsmcCloud/dsmcCloud.C

src/lagrangian/dsmc/clouds/derived/dsmcCloud/dsmcCloud.H