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-gnome/epiphany/files/0002-help-meson.build-disable-the-use-of-yelp.patch b/poky/meta/recipes-gnome/epiphany/files/0002-help-meson.build-disable-the-use-of-yelp.patch
index 249517d..d4f3cc1 100644
--- a/poky/meta/recipes-gnome/epiphany/files/0002-help-meson.build-disable-the-use-of-yelp.patch
+++ b/poky/meta/recipes-gnome/epiphany/files/0002-help-meson.build-disable-the-use-of-yelp.patch
@@ -1,34 +1,30 @@
-From fc314fc3a66c92fe73e1a0cea4f49d11b29e1f45 Mon Sep 17 00:00:00 2001
+From 0048ae2d225d25cc58f378718ca6f9ddb1a228f9 Mon Sep 17 00:00:00 2001
 From: Alexander Kanavin <alex.kanavin@gmail.com>
 Date: Wed, 31 Jan 2018 15:50:38 +0200
-Subject: [PATCH 2/2] help/meson.build: disable the use of yelp
+Subject: [PATCH] help/meson.build: disable the use of yelp
 
 In particular this avoids calling itstool which oe-core doesn't provide.
 
 Upstream-Status: Inappropriate [oe-core specific]
 Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
+
 ---
- help/meson.build | 10 +++++-----
- 1 file changed, 5 insertions(+), 5 deletions(-)
+ help/meson.build | 8 ++++----
+ 1 file changed, 4 insertions(+), 4 deletions(-)
 
 diff --git a/help/meson.build b/help/meson.build
-index f720add..cbfeb1e 100644
+index fddcf4c..f7d76c6 100644
 --- a/help/meson.build
 +++ b/help/meson.build
-@@ -46,8 +46,8 @@ help_linguas = [
-   'sv'
+@@ -32,7 +32,7 @@ help_media = [
+   'media/web-browser.png'
  ]
  
 -gnome.yelp(meson.project_name(),
 -  sources: help_files,
 -  media: help_media,
--  languages: help_linguas,
 -)
 +#gnome.yelp(meson.project_name(),
 +#  sources: help_files,
 +#  media: help_media,
-+#  languages: help_linguas,
 +#)
--- 
-2.15.1
-