*  apps/g2/compute_ctos.cpp,
      *  apps/g2/compute_ctos.hpp: New.
      *  apps/g2/g2-maxdepth.cpp: Support for other pinf.
      *  apps/g2/satmaxtree-cli.cpp: Externalize 2-Face removal.
      *  apps/g2/satmaxtree.cpp,
      *  apps/g2/satmaxtree.hpp: Clean facades and add 2F removal method.
      *  mln/morpho/tos/ctos.hpp: Add some overloads.