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/CVE-2018-1000073.patch b/poky/meta/recipes-devtools/ruby/ruby/CVE-2018-1000073.patch
new file mode 100644
index 0000000..22fa1b5
--- /dev/null
+++ b/poky/meta/recipes-devtools/ruby/ruby/CVE-2018-1000073.patch
@@ -0,0 +1,34 @@
+From 1b931fc03b819b9a0214be3eaca844ef534175e2 Mon Sep 17 00:00:00 2001
+From: Jonathan Claudius <jclaudius@mozilla.com>
+Date: Wed, 7 Feb 2018 23:54:52 -0500
+Subject: [PATCH] Non-working patch for deducing symlinked base-dirs
+
+---
+CVE: CVE-2018-1000073
+
+Fixed in ruby 2.7.6.
+
+Upstream-Status: Backport [github.com/rubygems/rubygems/commit/1b931fc...]
+
+Signed-off-by: Joe Slater <joe.slater@windriver.com>
+
+---
+ lib/rubygems/package.rb |    2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/lib/rubygems/package.rb b/lib/rubygems/package.rb
+index dede959..cb9c74a 100644
+--- a/lib/rubygems/package.rb
++++ b/lib/rubygems/package.rb
+@@ -421,6 +421,8 @@ EOM
+     destination_dir = File.expand_path destination_dir
+ 
+     destination = File.join destination_dir, filename
++    destination = File.realpath destination if
++      File.respond_to? :realpath
+     destination = File.expand_path destination
+ 
+     raise Gem::Package::PathError.new(destination, destination_dir) unless
+-- 
+1.7.9.5
+