debug/gdb: fix from upstream with newer glibc(siginfo vs siginfo_t, Gentoo gdb-7.4.1 patch)

This is for when you failed to build gdb-native with the error:

gdb-7.4.1/gdb/linux-nat.h:79:18: error: field 'siginfo' has incomplete type"

This is from mirror://gentoo/distfiles/gdb-7.4.1-patches-2.tar.xz

Signed-off-by: "Jang, Bongseo" <graycells@gmail.com>
[yann.morin.1998@free.fr: refresh ptrace_setsiginfo patch]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Message-ID: <4eef2edec3201c50b420.1348370891@localhost.localdomain>
PatchWork-ID: 186179

syntax: glob

# Generated files

configure

autom4te.cache

config.log

config.status

Makefile

*ct-ng*

docs/*ct-ng*.1

docs/*ct-ng*.1.gz

paths.mk

paths.sh

scripts/crosstool-NG.sh

scripts/saveSample.sh

scripts/showTuple.sh

kconfig/conf

kconfig/?conf

kconfig/**.o

kconfig/**.dep

kconfig/lex.backup

kconfig/lex.zconf.c

kconfig/zconf.hash.c

kconfig/zconf.tab.c

config/configure.in

config.gen/

.config

.config.2

# Temporaries

.*.swp

build.log

.config.old

# This is the place where toolchains are built

.build/

# .. and the legacy location

targets/