libnewt: link whiptail properly with libnewt

Configuration failed to detect gold as GNU linker. It was searching for
'GNU ld' but gold returns 'GNU gold (GNU Binutils 2.27.0.20160806) 1.12' which
does not match. When not linking by GNU linker Makefile did some magic link
target alignment:

ifneq ($(GNU_LD),)
SHLIBFLAGS= -Wl,--version-script,newt.0.52.ver -Wl,-soname,$(LIBNEWTSONAME)
else
SHLIBFLAGS=
endif

which caused:

| WARNING: libnewt-0.52.19-r0 do_package_qa: QA Issue: /usr/bin/whiptail contained in package whiptail requires libnewt.so, but no providers found in RDEPENDS_whiptail? [file-rdeps]

(From OE-Core rev: 3b806c927504e682ddd159c890a5f243e273b23e)

Signed-off-by: Andreas Müller <schnitzeltony@googlemail.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-extended/newt/files/0001-detect-gold-as-GNU-linker-too.patch

@@ -0,0 +1,31 @@
+From 58245b859ffbcb1780575bf1b0a018d55e74e434 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Andreas=20M=C3=BCller?= <schnitzeltony@googlemail.com>
+Date: Wed, 21 Sep 2016 21:14:40 +0200
+Subject: [PATCH] detect gold as GNU linker too
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Upstream-Status: Pending
+
+Signed-off-by: Andreas Müller <schnitzeltony@googlemail.com>
+---
+ configure.ac | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/configure.ac b/configure.ac
+index 03e8bda..c2fce51 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -28,7 +28,7 @@ AC_CHECK_SIZEOF([void *])
+ AC_MSG_CHECKING([for GNU ld])
+ LD=`$CC -print-prog-name=ld 2>&5`
+ 
+-if test `$LD -v 2>&1 | $ac_cv_path_GREP -c "GNU ld"` = 0; then
++if test `$LD -v 2>&1 | $ac_cv_path_GREP -c "GNU "` = 0; then
+   # Not
+   GNU_LD=""
+   AC_MSG_RESULT([no])
+-- 
+2.5.5
+

meta/recipes-extended/newt/libnewt_0.52.19.bb

@@ -22,6 +22,7 @@ SRC_URI = "https://fedorahosted.org/releases/n/e/newt/newt-${PV}.tar.gz \
            file://cross_ar.patch \
            file://Makefile.in-Add-tinfo-library-to-the-linking-librari.patch \
            file://pie-flags.patch \
+           file://0001-detect-gold-as-GNU-linker-too.patch \
 "
 
 SRC_URI[md5sum] = "e4aa0f7943edd39c52481a87f68f412a"