Added some lua bondings

CMakeLists.txt

Common/GmshConfig.h.in

Common/luna.h

Geo/CMakeLists.txt

Geo/GFaceCompound.cpp

Geo/GModel.h

Geo/LuaBindings_Geo.cpp

Geo/LuaBindings_Geo.h

Numeric/fullMatrix.cpp

Numeric/fullMatrix.h

Solver/CMakeLists.txt

Solver/dgAlgorithm.cpp

Solver/dgGroupOfElements.h

Solver/dgMainTest.cpp

Solver/dgSystemOfEquations.cpp

Solver/dgSystemOfEquations.h

Solver/function.h

Solver/multiscaleLaplace.cpp

Solver/multiscaleLaplace.h

benchmarks/extrude/Cylinder.geo