libffi: upgrade 3.4.5 -> 3.4.6

meta/recipes-support/libffi/libffi/not-win32.patch
refreshed for 3.4.6

Changelog:
===========
-chore: update version to 3.4.6 and fix long double regression on mips64 and alpha
-Update sparc64 host
-Update cfarm hostnames
-Always define long double types
-update copyright year in libffi.texi
-Update version, copyright and testsuite info
-Fix test filename reference

(From OE-Core rev: 0ea9b851f3d7ca568b536c7980730ea03333d037)

Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-support/libffi/libffi/not-win32.patch

@@ -1,4 +1,4 @@
-From 20bc4e03442e15965ae3907013e9a177878f0323 Mon Sep 17 00:00:00 2001
+From be9d4cc110c159812699780348686da371296b94 Mon Sep 17 00:00:00 2001
 From: Ross Burton <ross.burton@intel.com>
 Date: Thu, 4 Feb 2016 16:22:50 +0000
 Subject: [PATCH] libffi: ensure sysroot paths are not in libffi.pc
@@ -15,16 +15,15 @@ As this block is generally pointless, disable it.
 
 Upstream-Status: Inappropriate
 Signed-off-by: Ross Burton <ross.burton@intel.com>
-
 ---
  configure.ac | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)
 
 diff --git a/configure.ac b/configure.ac
-index 7e8cd98..cf37e88 100644
+index 816bfd6..e37c5a8 100644
 --- a/configure.ac
 +++ b/configure.ac
-@@ -405,7 +405,7 @@ AC_ARG_ENABLE(multi-os-directory,
+@@ -401,7 +401,7 @@ AC_ARG_ENABLE(multi-os-directory,
  
  # These variables are only ever used when we cross-build to X86_WIN32.
  # And we only support this with GCC, so...

meta/recipes-support/libffi/libffi_3.4.6.bb

@@ -13,7 +13,7 @@ LIC_FILES_CHKSUM = "file://LICENSE;md5=1db54c9fd307a12218766c3c7f650ca7"
 SRC_URI = "${GITHUB_BASE_URI}/download/v${PV}/${BPN}-${PV}.tar.gz \
            file://not-win32.patch \
            "
-SRC_URI[sha256sum] = "96fff4e589e3b239d888d9aa44b3ff30693c2ba1617f953925a70ddebcc102b2"
+SRC_URI[sha256sum] = "b0dea9df23c863a7a50e825440f3ebffabd65df1497108e5d437747843895a4e"
 
 EXTRA_OECONF += "--disable-builddir --disable-exec-static-tramp"
 EXTRA_OECONF:class-native += "--with-gcc-arch=generic"