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-filesystems/recipes-utils/xfsprogs/files/disable-xfs_scrub-build.patch b/meta-openembedded/meta-filesystems/recipes-utils/xfsprogs/files/disable-xfs_scrub-build.patch
new file mode 100644
index 0000000..c07b4b5
--- /dev/null
+++ b/meta-openembedded/meta-filesystems/recipes-utils/xfsprogs/files/disable-xfs_scrub-build.patch
@@ -0,0 +1,30 @@
+From 2bd40e5ed4df0b0a42beff8806b1ec5daa372c48 Mon Sep 17 00:00:00 2001
+From: Yi Zhao <yi.zhao@windriver.com>
+Date: Thu, 19 Jul 2018 16:49:41 +0800
+Subject: [PATCH] Disable xfs_scrub build
+
+Disable xfs_scrub build since it is experimental.
+
+Upstream-Status: Inappropriate [embedded specific]
+
+Signed-off-by: Yi Zhao <yi.zhao@windriver.com>
+---
+ Makefile | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/Makefile b/Makefile
+index 7ddfa31..cd60319 100644
+--- a/Makefile
++++ b/Makefile
+@@ -48,7 +48,7 @@ LIBFROG_SUBDIR = libfrog
+ DLIB_SUBDIRS = libxlog libxcmd libhandle
+ LIB_SUBDIRS = libxfs $(DLIB_SUBDIRS)
+ TOOL_SUBDIRS = copy db estimate fsck growfs io logprint mkfs quota \
+-		mdrestore repair rtcp m4 man doc debian spaceman scrub
++		mdrestore repair rtcp m4 man doc debian spaceman
+ 
+ ifneq ("$(PKG_PLATFORM)","darwin")
+ TOOL_SUBDIRS += fsr
+-- 
+2.7.4
+