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/poky/meta/recipes-sato/webkit/webkitgtk/0001-OptionsGTK.cmake-drop-the-hardcoded-introspection-gt.patch b/poky/meta/recipes-sato/webkit/webkitgtk/0001-OptionsGTK.cmake-drop-the-hardcoded-introspection-gt.patch
index 0f6eeed..e8d1d8c 100644
--- a/poky/meta/recipes-sato/webkit/webkitgtk/0001-OptionsGTK.cmake-drop-the-hardcoded-introspection-gt.patch
+++ b/poky/meta/recipes-sato/webkit/webkitgtk/0001-OptionsGTK.cmake-drop-the-hardcoded-introspection-gt.patch
@@ -1,4 +1,4 @@
-From 48648570e449cf7f84a26dc03c1e3f620fa69757 Mon Sep 17 00:00:00 2001
+From bed4cf4aaa6aad4172ec9942e9039fb8e1ef68a4 Mon Sep 17 00:00:00 2001
 From: Alexander Kanavin <alex.kanavin@gmail.com>
 Date: Mon, 29 Feb 2016 18:13:39 +0200
 Subject: [PATCH] OptionsGTK.cmake: drop the hardcoded introspection/gtkdoc
@@ -11,16 +11,17 @@
 Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
 
 Upstream-Status: Pending
+
 ---
  Source/cmake/OptionsGTK.cmake | 6 ------
  1 file changed, 6 deletions(-)
 
-Index: webkitgtk-2.12.1/Source/cmake/OptionsGTK.cmake
-===================================================================
---- webkitgtk-2.12.1.orig/Source/cmake/OptionsGTK.cmake
-+++ webkitgtk-2.12.1/Source/cmake/OptionsGTK.cmake
-@@ -424,12 +424,6 @@ if (USE_LIBHYPHEN)
-     endif ()
+diff --git a/Source/cmake/OptionsGTK.cmake b/Source/cmake/OptionsGTK.cmake
+index 661b40e..404441b 100644
+--- a/Source/cmake/OptionsGTK.cmake
++++ b/Source/cmake/OptionsGTK.cmake
+@@ -352,12 +352,6 @@ if (ENABLED_COMPILER_SANITIZERS)
+     set(ENABLE_INTROSPECTION OFF)
  endif ()
  
 -# Override the cached variables, gtk-doc and gobject-introspection do not really work when cross-building.