sysdeps/unix/sysv/linux/bits/socket.h: Correct formatting

	* sysdeps/unix/sysv/linux/bits/socket.h: Adjust macro formatting
	throughout.
Rename soft-fp extended.h, op-common.h variables to avoid risk of shadowing.

In <https://sourceware.org/ml/libc-alpha/2013-06/msg00851.html>, I
fixed a bug caused by multiple soft-fp macros using the same variable
names, resulting in shadowing when one macro called another that used
the same variable name, with an argument involving the variable in the
outer macro.  The fix was to rename the local variables so their names
included the containing macro name, to ensure uniqueness.

I noted then that this would make sense more systematically for all
variables in any soft-fp macro.  Since then, I've used such variable
names in new soft-fp macros.  This patch now converts existing macros
in extended.h and op-common.h to use this convention.  (op-[1248].h
are intended to be converted separately.)

(Name conflicts could arise for label names as well, but because those
are function-scope in C any such conflict will give an immediate
compile error rather than a subtle bug, so there's no need for
preemptive renaming in that case.)

Tested for powerpc32 (soft-float) and mips64 that this makes no change
to the disassembly of installed shared libraries.

	* soft-fp/extended.h (FP_UNPACK_RAW_E): Rename local variables to
	include macro name.
	(FP_UNPACK_RAW_EP): Likewise.
	(FP_PACK_RAW_E): Likewise.
	(FP_PACK_RAW_EP): Likewise.
	* soft-fp/op-common.h (_FP_UNPACK_CANONICAL): Likewise.
	(_FP_ISSIGNAN): Likewise.
	(_FP_ADD_INTERNAL): Likewise.
	(_FP_FMA): Likewise.
	(_FP_CMP): Likewise.
	(_FP_SQRT): Likewise.
	(_FP_TO_INT): Likewise.
	(_FP_FROM_INT): Likewise.
	(FP_EXTEND): Likewise.
	(_FP_DIV_MEAT_N_loop): Likewise.
Rename soft-fp op-[1248].h variables to avoid risk of shadowing.

Continuing the soft-fp variable renaming from
<https://sourceware.org/ml/libc-alpha/2014-06/msg00434.html> to avoid
shadowing if two macros happen to use the same variable name and that
variable is involved in an argument one of those macros passes to
another, this patch renames variables in op-[1248].h.  (The two
patches are to different files and are independent of each other.)

Tested for powerpc32 (soft-float) and mips64 that this makes no change
to the disassembly of installed shared libraries.

	* soft-fp/op-1.h (_FP_UNPACK_RAW_1): Rename local variables to
	include macro name.
	(_FP_UNPACK_RAW_1_P): Likewise.
	(_FP_PACK_RAW_1): Likewise.
	(_FP_PACK_RAW_1_P): Likewise.
	(_FP_MUL_MEAT_1_wide): Likewise.
	(_FP_MUL_MEAT_DW_1_hard): Likewise.
	(_FP_MUL_MEAT_1_hard): Likewise.
	(_FP_DIV_MEAT_1_imm): Likewise.
	(_FP_DIV_MEAT_1_udiv_norm): Likewise.
	(_FP_DIV_MEAT_1_udiv): Likewise.
	* soft-fp/op-2.h (__FP_FRAC_DEC_2): Likewise.
	(_FP_UNPACK_RAW_2): Likewise.
	(_FP_UNPACK_RAW_2_P): Likewise.
	(_FP_PACK_RAW_2): Likewise.
	(_FP_PACK_RAW_2_P): Likewise.
	(_FP_MUL_MEAT_DW_2_wide): Likewise.
	(_FP_MUL_MEAT_2_wide): Likewise.
	(_FP_MUL_MEAT_DW_2_wide_3mul): Likewise.
	(_FP_MUL_MEAT_2_wide_3mul): Likewise.
	(_FP_MUL_MEAT_DW_2_gmp): Likewise.
	(_FP_MUL_MEAT_2_gmp): Likewise.
	(_FP_DIV_MEAT_2_udiv): Likewise.
	* soft-fp/op-4.h (_FP_FRAC_SLL_4): Likewise.
	(_FP_FRAC_SRL_4): Likewise.
	(_FP_FRAC_SRST_4): Likewise.
	(_FP_FRAC_SRS_4): Likewise.
	(_FP_UNPACK_RAW_4): Likewise.
	(_FP_UNPACK_RAW_4_P): Likewise.
	(_FP_PACK_RAW_4): Likewise.
	(_FP_PACK_RAW_4_P): Likewise.
	(_FP_MUL_MEAT_DW_4_wide): Likewise.
	(_FP_MUL_MEAT_4_wide): Likewise.
	(_FP_MUL_MEAT_4_gmp): Likewise.
	(umul_ppppmnnn): Likewise.
	(_FP_DIV_MEAT_4_udiv): Likewise.
	(__FP_FRAC_ADD_4): Likewise.
	(__FP_FRAC_SUB_3): Likewise.
	(__FP_FRAC_SUB_4): Likewise.
	(__FP_FRAC_DEC_3): Likewise.
	(__FP_FRAC_DEC_4): Likewise.
	(__FP_FRAC_ADDI_4): Likewise.
	* soft-fp/op-8.h (_FP_FRAC_SLL_8): Likewise.
	(_FP_FRAC_SRL_8): Likewise.
	(_FP_FRAC_SRS_8): Likewise.
Fix ldbl-128 expm1l spurious underflow (bug 16539).

This patch fixes spurious underflows from ldbl-128 expm1l, as reported
in <https://sourceware.org/ml/libc-alpha/2014-06/msg00835.html> and
exposed by the tests added for such a bug in the x86 / x86-64
version.  The bug and fix are essentially the same, so no separate bug
is filed in Bugzilla.

Tested for mips64.

	[BZ #16539]
	* sysdeps/ieee754/ldbl-128/s_expm1l.c: Include <float.h>.
	(__expm1l): Return argument unchanged when small but not
	subnormal.
ARM: Split Linuxism out of sysdeps/arm/nptl/tls.h
test-skeleton: Kill any child process's offspring

This makes sure any subprocesses created by the program being tested get
killed as well if their parent times out.  Otherwise if they are really
stuck, they may remain there running forever after the test case and
then the whole test suite has completed, until killed by hand.

	* test-skeleton.c (signal_handler): Kill the whole process group
	before killing the child individually.
	(main): Report any failure on `setpgid'.
Regenerate ARM libm-test-ulps.

This patch regenerates libm-test-ulps for ARM.  As before it may be
useful for someone building for a configuration with VFMA enabled to
do a followup regeneration for any additional ulps in that
configuration.

Committed.

	* sysdeps/arm/libm-test-ulps: Regenerated.
Regenerate powerpc-nofpu libm-test-ulps.

This patch regenerates libm-test-ulps for powerpc-nofpu.

	* sysdeps/powerpc/nofpu/libm-test-ulps: Regenerated.
Regenerate MIPS libm-test-ulps.

This patch regenerates libm-test-ulps for MIPS.

	* sysdeps/mips/mips32/libm-test-ulps: Regenerated.
	* sysdeps/mips/mips64/libm-test-ulps: Likewise.
Update powerpc-fpu ULPs.