Added shallowWaterFoam solver and tutorial case.

...tions/solvers/incompressible/shallowWaterFoam/CourantNo.H

...ations/solvers/incompressible/shallowWaterFoam/Make/files

...ions/solvers/incompressible/shallowWaterFoam/Make/options

...ns/solvers/incompressible/shallowWaterFoam/createFields.H

...tions/solvers/incompressible/shallowWaterFoam/createPhi.H

...mpressible/shallowWaterFoam/readEnvironmentalProperties.H

...olvers/incompressible/shallowWaterFoam/shallowWaterFoam.C

.../incompressible/shallowWaterFoam/squareBump/.gmtcommands4

tutorials/incompressible/shallowWaterFoam/squareBump/0/U

tutorials/incompressible/shallowWaterFoam/squareBump/0/h

...rials/incompressible/shallowWaterFoam/squareBump/0/hTotal

...llowWaterFoam/squareBump/constant/environmentalProperties

...ls/incompressible/shallowWaterFoam/squareBump/constant/h0

...allowWaterFoam/squareBump/constant/polyMesh/blockMeshDict

...le/shallowWaterFoam/squareBump/constant/polyMesh/boundary

...mpressible/shallowWaterFoam/squareBump/system/controlDict

...compressible/shallowWaterFoam/squareBump/system/fvSchemes

...ompressible/shallowWaterFoam/squareBump/system/fvSolution

...ressible/shallowWaterFoam/squareBump/system/setFieldsDict