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

Original patch from Gentoo.

-= BEGIN original header =-

-= END original header =-

diff -durN uClibc-0.9.30.orig/libc/inet/resolv.c uClibc-0.9.30/libc/inet/resolv.c

--- uClibc-0.9.30.orig/libc/inet/resolv.c	2008-11-02 01:25:33.000000000 +0100

+++ uClibc-0.9.30/libc/inet/resolv.c	2009-02-07 09:57:59.000000000 +0100

@@ -1788,7 +1788,7 @@

 int gethostent_r(struct hostent *result_buf, char *buf, size_t buflen,

 	struct hostent **result, int *h_errnop)

 {

-	int ret;

+	int ret = HOST_NOT_FOUND;

 	__UCLIBC_MUTEX_LOCK(mylock);

 	if (__gethostent_fp == NULL) {