xbps: add glibc-2.16 patch

srcpkgs/xbps/patches/fix-glibc216.patch

@@ -0,0 +1,35 @@
+From 876f9f4a27ffd9477be8348710cb0baf387c50a0 Mon Sep 17 00:00:00 2001
+From: Leah Neukirchen <leah@vuxu.org>
+Date: Mon, 7 Aug 2017 16:08:15 +0200
+Subject: [PATCH] xbps-fbulk: use _DEFAULT_SOURCE, required for wait3 in glibc
+ 2.16.
+
+Also these guards need to be defined before including anything.
+---
+ bin/xbps-fbulk/main.c | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/bin/xbps-fbulk/main.c b/bin/xbps-fbulk/main.c
+index 82dc0a16..b686cfa7 100644
+--- bin/xbps-fbulk/main.c
++++ bin/xbps-fbulk/main.c
+@@ -47,6 +47,8 @@
+  * Only one attempt is made to build any given package, no matter how many
+  * other packages depend on it.
+  */
++#define _DEFAULT_SOURCE
++#define _BSD_SOURCE
+ #include <stdio.h>
+ #include <stdlib.h>
+ #include <unistd.h>
+@@ -59,9 +61,7 @@
+ #include <fcntl.h>
+ #include <sys/file.h>
+ #include <sys/stat.h>
+-#define _BSD_SOURCE
+-# include <sys/wait.h>
+-#undef _BSD_SOURCE
++#include <sys/wait.h>
+ #include <getopt.h>
+ 
+ #include <xbps.h>