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-python/recipes-extended/python-blivet/python3-blivet/0004-fix-new.roots-object-is-not-iterable.patch b/meta-openembedded/meta-python/recipes-extended/python-blivet/python3-blivet/0004-fix-new.roots-object-is-not-iterable.patch
new file mode 100644
index 0000000..be997ac
--- /dev/null
+++ b/meta-openembedded/meta-python/recipes-extended/python-blivet/python3-blivet/0004-fix-new.roots-object-is-not-iterable.patch
@@ -0,0 +1,28 @@
+From c31df1c0f5323ddc70e0d1c6d11db2fbf7a024ad Mon Sep 17 00:00:00 2001
+From: Hongxu Jia <hongxu.jia@windriver.com>
+Date: Mon, 8 May 2017 16:30:20 +0800
+Subject: [PATCH 04/11] fix new.roots object is not iterable
+
+Upstream-Status: Pending
+
+Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
+---
+ blivet/blivet.py | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/blivet/blivet.py b/blivet/blivet.py
+index 3405810..f42b73b 100644
+--- a/blivet/blivet.py
++++ b/blivet/blivet.py
+@@ -1198,7 +1198,7 @@ class Blivet(object):
+             p = partition.disk.format.parted_disk.getPartitionByPath(partition.path)
+             partition.parted_partition = p
+ 
+-        for root in new.roots:
++        for root in new.roots or []:
+             root.swaps = [new.devicetree.get_device_by_id(d.id, hidden=True) for d in root.swaps]
+             root.swaps = [s for s in root.swaps if s]
+ 
+-- 
+2.7.4
+