* oln/types/int_u.hh, oln/types/int_s.hh, oln/types/range.hh,
	oln/types/cycle.hh, oln/types/typetraits_builtin_int.hh,
	oln/types/typetraits_builtin_float.hh: Add behaviour_type typedef.
	* oln/types/optraits_scalar_defs.hh, oln/types/behaviour.hh: Add
	arithmetic checks.
	* oln/types/behaviour.hh, oln/types/optraits_int_u.hh,
	oln/types/optraits_int_s.hh, oln/types/optraits_cycle.hh,
	oln/types/optraits_range.hh, oln/types/interval.hh,
	oln/types/optraits_bin.hh: Add debug code.
	* oln/types/to_oln.hh: Add OLN_TYPE macro.

    prcs2git-id: 0_5.44