THINGS TO DO
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-Compile only one program for both graphical and console modes, or
 support only the graphical mode.
- Some fine tuning around the classes
- Make MemWin, RegWin be able to make a standalone
  window if parentwin=0.
- Connect File->Open, View->... and Help->License menus.
- Make the RegWin and MemWin react when mouse clicked. (modify register or
  memory)
- Enlever les fonctions ReadI, WriteI, dumpI etc... et plutot utiliser les
  fonctions ReadInt, WriteInt, DumpInt, DumpExt, etc.
- Lors d'un DumpInt, verifier a ne pas afficher plus haut que la taille
  reelle de la memoire interne. (Detail)