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-oe/recipes-support/multipath-tools/files/0029-multipath-tools-modify-Makefile.inc-for-cross-compil.patch b/meta-openembedded/meta-oe/recipes-support/multipath-tools/files/0029-multipath-tools-modify-Makefile.inc-for-cross-compil.patch
new file mode 100644
index 0000000..45cd32a
--- /dev/null
+++ b/meta-openembedded/meta-oe/recipes-support/multipath-tools/files/0029-multipath-tools-modify-Makefile.inc-for-cross-compil.patch
@@ -0,0 +1,49 @@
+From 8bdd4481d822b6625d8bf719431ca74ed1b5e021 Mon Sep 17 00:00:00 2001
+From: Changqing Li <changqing.li@windriver.com>
+Date: Mon, 16 Jul 2018 15:56:37 +0800
+Subject: [PATCH] multipath-tools: modify Makefile.inc for cross-compilation
+
+Do not look for systemd info on the host, and allow us to pass in CFLAGS
+using the OPTFLAGS variable.
+
+Upstream-Status: Inappropriate [embedded specific]
+
+Signed-off-by: Joe Slater <joe.slater@windriver.com>
+
+Update for version 0.5.0-144-g770e6d0
+
+Signed-off-by: Kai Kang <kai.kang@windriver.com>
+
+Update for version 0.7.1
+
+Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
+
+update for version 0.7.7
+
+remove change about CFLAGS part, since patch 0024 already have similar function.
+
+Signed-off-by: Changqing Li <changqing.li@windriver.com>
+---
+ Makefile.inc | 8 ++------
+ 1 file changed, 2 insertions(+), 6 deletions(-)
+
+diff --git a/Makefile.inc b/Makefile.inc
+index 57a1835..0c403c7 100644
+--- a/Makefile.inc
++++ b/Makefile.inc
+@@ -38,12 +38,6 @@ ifndef RUN
+ 	endif
+ endif
+ 
+-ifndef SYSTEMD
+-	ifeq ($(shell systemctl --version > /dev/null 2>&1 && echo 1), 1)
+-		SYSTEMD = $(shell systemctl --version 2> /dev/null |  sed -n 's/systemd \([0-9]*\)/\1/p')
+-	endif
+-endif
+-
+ ifndef SYSTEMDPATH
+ 	SYSTEMDPATH=usr/lib
+ endif
+-- 
+2.7.4
+