inserted include guards;

pub/lib/commands.cpp

pub/lib/commands.hpp

pub/lib/coord.hpp

pub/lib/curve.cpp

pub/lib/curve.hpp

pub/lib/defs.hpp

pub/lib/edif.cpp

pub/lib/edif.hpp

pub/lib/expr.hpp

pub/lib/file_in.hpp

pub/lib/file_out.hpp

pub/lib/fit.hpp

pub/lib/fregistry.hpp

pub/lib/fsel.hpp

pub/lib/func.hpp

pub/lib/genus.cpp

pub/lib/genus.hpp

pub/lib/import.hpp

pub/lib/jsel.hpp

pub/lib/loop.cpp