in rundgpy and replace it by a hack in gmshpy::__init__ so that gmshpy
can be load as a standard python module even if linked with openmpi
(compiled with dynamic modules)
standard module

dg: stereographic 3d operators. Diffusion stereo. Artificial diffusion stabilization. FunctionIntegrator: removed unneded printf

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A new implementation for gamepad. option "-gamepad" is needed now. If no option, gamepad can be seen but nothing happens. 
All functionalities with "-gamepad", even if no gamepad is plugged when gmsh is launched. 
Gamepad can be plugged or desactivated during execution.

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Implementation of gamepad for Windows. Now the use of gamepad is available for Linux and Windows. Still to be done for Apple.

Very usefull for shell model with compartments (boat, plane, building,...). Allows a good immersion into the model. I advise you to test.

Rendering seems to be better on Linux than on Windows: residual offsets on some axes signals are observed which leads to a possible little drifting of the model. Needs to shake joystick. It may come from the gamepad I used which is a old one.

Removed the -q option in initial mesh generation (generates meshes that do not respect size field)