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/ruby/ruby.inc b/poky/meta/recipes-devtools/ruby/ruby.inc
index fd3911b..5a5bef2 100644
--- a/poky/meta/recipes-devtools/ruby/ruby.inc
+++ b/poky/meta/recipes-devtools/ruby/ruby.inc
@@ -11,7 +11,7 @@
     file://COPYING;md5=340948e1882e579731841bf49cdc22c1 \
     file://BSDL;md5=19aaf65c88a40b508d17ae4be539c4b5\
     file://GPL;md5=b234ee4d69f5fce4486a80fdaf4a4263\
-    file://LEGAL;md5=8f871f3f03732c018a5fa9b185958231 \
+    file://LEGAL;md5=23a79bb4c1a40f6cc9bcb6f4e7c39799 \
 "
 
 DEPENDS = "ruby-native zlib openssl tcl libyaml gdbm readline"