Fix excessive ULP for y1_upward (0x2p+0) in test-float and test-ifloat.

	* sysdeps/ieee754/flt-32/e_j1f.c (__ieee754_y1f): Force computations
	to occur in round to nearest mode when |x| >= 2.0
Update Sparc ULPS.

	* sysdeps/sparc/fpu/libm-test-ulps: Update.
[AArch64] Rewrite feupdateenv (BZ 17009).
[AArch64] Remove ISB after FPCR write.
Fix format specifier for n_mmaps
SH: Consolidate NPTL/non versions of vfork