Use libm_alias_ldouble in sysdeps/i386/fpu.

Use libm_alias_ldouble in sysdeps/i386/fpu.

This patch continues the preparation for additional _FloatN / _FloatNx
function aliases by using libm_alias_ldouble for sysdeps/i386/fpu long
double functions, so that they can have _Float64x aliases added in
future.

Tested for x86_64 (which includes some of these implementations) and
x86, including build-many-glibcs.py tests that installed stripped
shared libraries are unchanged by the patch.

	* sysdeps/i386/fpu/e_expl.S: Include <libm-alias-ldouble.h>.
	[USE_AS_EXPM1L] (expm1l): Define using libm_alias_ldouble.
	* sysdeps/i386/fpu/s_asinhl.S: Include <libm-alias-ldouble.h>.
	(asinhl): Define using libm_alias_ldouble.
	* sysdeps/i386/fpu/s_atanl.c: Include <libm-alias-ldouble.h>.
	(atanl): Define using libm_alias_ldouble.
	* sysdeps/i386/fpu/s_cbrtl.S: Include <libm-alias-ldouble.h>.
	(cbrtl): Define using libm_alias_ldouble.
	* sysdeps/i386/fpu/s_ceill.S: Include <libm-alias-ldouble.h>.
	(ceill): Define using libm_alias_ldouble.
	* sysdeps/i386/fpu/s_copysignl.S: Include <libm-alias-ldouble.h>.
	(copysignl): Define using libm_alias_ldouble.
	* sysdeps/i386/fpu/s_fabsl.S: Include <libm-alias-ldouble.h>.
	(fabsl): Define using libm_alias_ldouble.
	* sysdeps/i386/fpu/s_floorl.S: Include <libm-alias-ldouble.h>.
	(floorl): Define using libm_alias_ldouble.
	* sysdeps/i386/fpu/s_fmaxl.S: Include <libm-alias-ldouble.h>.
	(fmaxl): Define using libm_alias_ldouble.
	* sysdeps/i386/fpu/s_fminl.S: Include <libm-alias-ldouble.h>.
	(fminl): Define using libm_alias_ldouble.
	* sysdeps/i386/fpu/s_frexpl.S: Include <libm-alias-ldouble.h>.
	(frexpl): Define using libm_alias_ldouble.
	* sysdeps/i386/fpu/s_llrintl.S: Include <libm-alias-ldouble.h>.
	(llrintl): Define using libm_alias_ldouble.
	* sysdeps/i386/fpu/s_logbl.c: Include <libm-alias-ldouble.h>.
	(logbl): Define using libm_alias_ldouble.
	* sysdeps/i386/fpu/s_lrintl.S: Include <libm-alias-ldouble.h>.
	(lrintl): Define using libm_alias_ldouble.
	* sysdeps/i386/fpu/s_nearbyintl.S: Include <libm-alias-ldouble.h>.
	(nearbyintl): Define using libm_alias_ldouble.
	* sysdeps/i386/fpu/s_nextafterl.c: Include <libm-alias-ldouble.h>.
	(nextafterl): Define using libm_alias_ldouble.
	* sysdeps/i386/fpu/s_remquol.S: Include <libm-alias-ldouble.h>.
	(remquol): Define using libm_alias_ldouble.
	* sysdeps/i386/fpu/s_rintl.c: Include <libm-alias-ldouble.h>.
	(rintl): Define using libm_alias_ldouble.
	* sysdeps/i386/fpu/s_truncl.S: Include <libm-alias-ldouble.h>.
	(truncl): Define using libm_alias_ldouble.
	* sysdeps/i386/i686/fpu/s_fmaxl.S: Include <libm-alias-ldouble.h>.
	(fmaxl): Define using libm_alias_ldouble.
	* sysdeps/i386/i686/fpu/s_fminl.S: Include <libm-alias-ldouble.h>.
	(fminl): Define using libm_alias_ldouble.