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-devtools/libtool/libtool-cross_2.4.6.bb b/poky/meta/recipes-devtools/libtool/libtool-cross_2.4.6.bb
index b268310..522bf3a 100644
--- a/poky/meta/recipes-devtools/libtool/libtool-cross_2.4.6.bb
+++ b/poky/meta/recipes-devtools/libtool/libtool-cross_2.4.6.bb
@@ -13,11 +13,19 @@
 	rm -f ${STAGING_DATADIR}/aclocal/lt*.m4
 }
 
+#
+# ccache may or may not be INHERITED, we remove references to it so the sstate
+# artefact works on a machine where its not present. libtool-cross isn't used
+# heavily so any performance issue is minor.
+# Find references to LTCC="ccache xxx-gcc" and CC="ccache xxx-gcc"
+#
 do_install () {
 	install -d ${D}${bindir_crossscripts}/
 	install -m 0755 ${HOST_SYS}-libtool ${D}${bindir_crossscripts}/${HOST_SYS}-libtool
 	sed -e 's@^\(predep_objects="\).*@\1"@' \
 	    -e 's@^\(postdep_objects="\).*@\1"@' \
+	    -e 's@^CC="ccache.@CC="@' \
+	    -e 's@^LTCC="ccache.@LTCC="@' \
 	    -i ${D}${bindir_crossscripts}/${HOST_SYS}-libtool
 	sed -i '/^archive_cmds=/s/\-nostdlib//g' ${D}${bindir_crossscripts}/${HOST_SYS}-libtool
 	sed -i '/^archive_expsym_cmds=/s/\-nostdlib//g' ${D}${bindir_crossscripts}/${HOST_SYS}-libtool