ptrace.h: add __ prefix to ptrace_peeksiginfo_args

All the other ptrace structures in this file have a __ prefix except this
new one.  This in turn causes build problems for most packages that try to
use ptrace such as strace:

gcc -DHAVE_CONFIG_H -I. -I../..  -I../../linux/x86_64 -I../../linux \
	-I./linux  -Wall -Wwrite-strings -g -O2 -MT process.o -MD -MP \
	-MF .deps/process.Tpo -c -o process.o ../../process.c
In file included from ../../process.c:63:0:
/usr/include/linux/ptrace.h:58:8: error: redefinition of 'struct ptrace_peeksiginfo_args'
 struct ptrace_peeksiginfo_args {
        ^
In file included from ../../defs.h:159:0,
                 from ../../process.c:37:
/usr/include/sys/ptrace.h:191:8: note: originally defined here
 struct ptrace_peeksiginfo_args
        ^

Since this struct was introduced in glibc-2.18, there shouldn't be any
real regressions with adding the __ prefix.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
ia64: add __ prefix to pt_all_user_regs/ia64_fpreg [BZ #762]

This addresses a long standing collision between userspace headers and
kernel headers only on ia64 systems.  All other types have a __ prefix
in the ptrace headers except these two.  Let's finally namespace these.

Verified that at least strace still builds after this change, as well
as after deleting all the struct hacks it has specifically for ia64.

URL: https://sourceware.org/bugzilla/show_bug.cgi?id=762
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
ia64: regenerate libm-test-ulps

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Fix ldbl-128 / ldbl-128ibm lgammal spurious underflow (bug 16400).

This patch fixes bug 16400, spurious underflow exceptions for ldbl-128
/ ldbl-128ibm lgammal with small positive arguments, by just using
-__logl (x) as the result in the problem cases (similar to the
previous fix for problems with small negative arguments).

Tested powerpc32, and also tested on mips64 that this does not require
ulps regeneration for the ldbl-128 case.

	* sysdeps/ieee754/ldbl-128/e_lgammal_r.c (__ieee754_lgammal_r):
	Return -__logl (x) for small positive arguments without evaluating
	a polynomial.