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-core/expat/expat_2.2.6.bb b/poky/meta/recipes-core/expat/expat_2.2.6.bb
new file mode 100644
index 0000000..c9e6081
--- /dev/null
+++ b/poky/meta/recipes-core/expat/expat_2.2.6.bb
@@ -0,0 +1,23 @@
+SUMMARY = "A stream-oriented XML parser library"
+DESCRIPTION = "Expat is an XML parser library written in C. It is a stream-oriented parser in which an application registers handlers for things the parser might find in the XML document (like start tags)"
+HOMEPAGE = "http://expat.sourceforge.net/"
+SECTION = "libs"
+LICENSE = "MIT"
+
+LIC_FILES_CHKSUM = "file://COPYING;md5=5b8620d98e49772d95fc1d291c26aa79"
+
+SRC_URI = "${SOURCEFORGE_MIRROR}/expat/expat-${PV}.tar.bz2 \
+           file://autotools.patch \
+           file://libtool-tag.patch \
+	  "
+
+SRC_URI[md5sum] = "ca047ae951b40020ac831c28859161b2"
+SRC_URI[sha256sum] = "17b43c2716d521369f82fc2dc70f359860e90fa440bea65b3b85f0b246ea81f2"
+
+inherit autotools lib_package
+
+do_configure_prepend () {
+	rm -f ${S}/conftools/libtool.m4
+}
+
+BBCLASSEXTEND = "native nativesdk"