reset upstream subtrees to yocto 2.6

Reset the following subtrees on thud HEAD:

  poky: 87e3a9739d
  meta-openembedded: 6094ae18c8
  meta-security: 31dc4e7532
  meta-raspberrypi: a48743dc36
  meta-xilinx: c42016e2e6

Also re-apply backports that didn't make it into thud:
  poky:
    17726d0 systemd-systemctl-native: handle Install wildcards

  meta-openembedded:
    4321a5d libtinyxml2: update to 7.0.1
    042f0a3 libcereal: Add native and nativesdk classes
    e23284f libcereal: Allow empty package
    030e8d4 rsyslog: curl-less build with fmhttp PACKAGECONFIG
    179a1b9 gtest: update to 1.8.1

Squashed OpenBMC subtree compatibility updates:
  meta-aspeed:
    Brad Bishop (1):
          aspeed: add yocto 2.6 compatibility

  meta-ibm:
    Brad Bishop (1):
          ibm: prepare for yocto 2.6

  meta-ingrasys:
    Brad Bishop (1):
          ingrasys: set layer compatibility to yocto 2.6

  meta-openpower:
    Brad Bishop (1):
          openpower: set layer compatibility to yocto 2.6

  meta-phosphor:
    Brad Bishop (3):
          phosphor: set layer compatibility to thud
          phosphor: libgpg-error: drop patches
          phosphor: react to fitimage artifact rename

    Ed Tanous (4):
          Dropbear: upgrade options for latest upgrade
          yocto2.6: update openssl options
          busybox: remove upstream watchdog patch
          systemd: Rebase CONFIG_CGROUP_BPF patch

Change-Id: I7b1fe71cca880d0372a82d94b5fd785323e3a9e7
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-openembedded/meta-networking/recipes-protocols/net-snmp/net-snmp/0001-config_os_headers-Error-Fix.patch b/meta-openembedded/meta-networking/recipes-protocols/net-snmp/net-snmp/0001-config_os_headers-Error-Fix.patch
index 44359be..bfc55a0 100644
--- a/meta-openembedded/meta-networking/recipes-protocols/net-snmp/net-snmp/0001-config_os_headers-Error-Fix.patch
+++ b/meta-openembedded/meta-networking/recipes-protocols/net-snmp/net-snmp/0001-config_os_headers-Error-Fix.patch
@@ -1,4 +1,4 @@
-From 261a22096c79f8e6ef7b387514a74d208e4e5945 Mon Sep 17 00:00:00 2001
+From 7ae2ce8dbf1c54d4e2db4a5f49397a239baadc49 Mon Sep 17 00:00:00 2001
 From: Li xin <lixin.fnst@cn.fujitsu.com>
 Date: Fri, 21 Aug 2015 18:23:13 +0900
 Subject: [PATCH] config_os_headers: Error Fix
@@ -13,15 +13,16 @@
 Upstream-Status: pending
 
 Signed-off-by: Li Xin <lixin.fnst@cn.fujitsu.com>
+
 ---
  configure.d/config_os_headers | 4 ++--
  1 file changed, 2 insertions(+), 2 deletions(-)
 
-Index: net-snmp-5.7.3/configure.d/config_os_headers
-===================================================================
---- net-snmp-5.7.3.orig/configure.d/config_os_headers
-+++ net-snmp-5.7.3/configure.d/config_os_headers
-@@ -484,8 +484,8 @@ then
+diff --git a/configure.d/config_os_headers b/configure.d/config_os_headers
+index af99746..83b2e31 100644
+--- a/configure.d/config_os_headers
++++ b/configure.d/config_os_headers
+@@ -489,8 +489,8 @@ then
      unset ac_cv_header_pkg_h
      netsnmp_save_CPPFLAGS="$CPPFLAGS"
      netsnmp_save_LDFLAGS="$LDFLAGS"