dpkg-compiler.m4: remove -Wvla (fix build on CentOS 5.8)

Remove the -Wvla flag from the set of compiler warning flags, since gcc
on old host systems such as CentOS 5.8 doesn't support it, and it
causes a build error for dpkg-native.

(From OE-Core rev: 736ef878570ebe60845da88094907ad28f7b50ff)

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/dpkg/dpkg/no-vla-warning.patch

@@ -0,0 +1,32 @@
+From e94474d805377d67c8b09664a602f20969e12b8a Mon Sep 17 00:00:00 2001
+From: Robert Yang <liezhi.yang@windriver.com>
+Date: Thu, 23 Jan 2014 04:17:23 -0500
+Subject: [PATCH] dpkg-compiler.m4: remove -Wvla
+
+Remove the -Wvla flag from the set of compiler warning flags, since gcc
+on old host systems such as CentOS 5.8 doesn't support it, and it
+causes a build error for dpkg-native.
+
+Upstream-Status: Pending
+
+Signed-off-by: Donn Seeley <donn.seeley@windriver.com>
+Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
+---
+ m4/dpkg-compiler.m4 |    1 -
+ 1 file changed, 1 deletion(-)
+
+diff --git a/m4/dpkg-compiler.m4 b/m4/dpkg-compiler.m4
+index f1c760b..500b5ad 100644
+--- a/m4/dpkg-compiler.m4
++++ b/m4/dpkg-compiler.m4
+@@ -72,7 +72,6 @@ if test "x$enable_compiler_warnings" = "xyes"; then
+   DPKG_WARNING_ALL([-Wformat-security])
+   DPKG_WARNING_ALL([-Wpointer-arith])
+   DPKG_WARNING_ALL([-Wlogical-op])
+-  DPKG_WARNING_ALL([-Wvla])
+   DPKG_WARNING_ALL([-Winit-self])
+   DPKG_WARNING_ALL([-Wwrite-strings])
+   DPKG_WARNING_ALL([-Wcast-align])
+-- 
+1.7.10.4
+

meta/recipes-devtools/dpkg/dpkg_1.17.4.bb

@@ -11,6 +11,7 @@ SRC_URI += "file://noman.patch \
             file://arch_pm.patch \
             file://dpkg-configure.service \
             file://glibc2.5-sync_file_range.patch \
+            file://no-vla-warning.patch \
            "
 
 SRC_URI[md5sum] = "cc25086e1e3bd9512a95f14cfe9002e1"