[Python] Fix Problem for python scenes use in builds

[PierreFonda3D]

Fix Problem for python scenes use in builds

When building there is now a copy of the "python" folder in x64 that is made in the build. Also fix sofa.ini problem

closes #252

[PierreFonda3D]

Status WIP because there is still a big problem : i need to modify the pyhton folder more precisely \python3\site-packages\Sofa_init_.py line 164 there must be something like :
pythonsys.stdout.flush() or sys.stderr.flush()
That must be replace by :

 if sys.stdout is not None:
    sys.stdout.flush()
if sys.stderr is not None:
    sys.stderr.flush() 

Probleme being that, for users, this file is in the x64/...dll in the realse unitypackage not on github
So 3 option @epernod :

• We do a new realse
• We modify the 25.12 realse
• We find another way to modify that ?