Added numeric_limits::digits and digits10
Added numeric_limits::digits and digits10

PetteriAimonen/ustl,szastupov/ustl,szastupov/ustl,Gerii/ustl,dgruss/ustl,NoSuchProcess/ustl,msharov/ustl,uusirant/ustl-cmake,Gerii/ustl,NoSuchProcess/ustl,uusirant/ustl-cmake,PetteriAimonen/ustl,PetteriAimonen/ustl,msharov/ustl,dgruss/ustl