* f95-lang.c (gfc_init_builtin_functions): Add more floating-point
	built-ins.
	* mathbuiltins.def (OTHER_BUILTIN): Define built-ins for logb,
	remainder, rint and signbit.
	* trans-decl.c (save_fp_state, restore_fp_state): Move to
	trans-intrinsic.c
	(gfc_generate_function_code): Use new names for these two functions.
	* trans-expr.c (gfc_conv_function_expr): Catch IEEE functions to
	emit code from the front-end.
	* trans-intrinsic.c (gfc_save_fp_state, gfc_restore_fp_state,
	conv_ieee_function_args, conv_intrinsic_ieee_builtin,
	conv_intrinsic_ieee_is_normal, conv_intrinsic_ieee_is_negative,
	conv_intrinsic_ieee_logb_rint, conv_intrinsic_ieee_rem,
	conv_intrinsic_ieee_next_after, conv_intrinsic_ieee_scalb,
	conv_intrinsic_ieee_copy_sign, gfc_conv_ieee_arithmetic_function):
	New functions.
	* trans.h (gfc_conv_ieee_arithmetic_function,
	gfc_save_fp_state, gfc_restore_fp_state): New prototypes.

	* ieee/ieee_helper.c (ieee_is_finite_*, ieee_is_nan_*,
	ieee_is_negative_*, ieee_is_normal_*, ieee_copy_sign_*,
	ieee_unordered_*, ieee_logb_*, ieee_rint_*, ieee_scalb_*,
	ieee_rem_*, ieee_next_after_*): Remove functions.
	* gfortran.map (GFORTRAN_1.5): Remove corresponding symbols.

From-SVN: r216036