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/packagegroups/packagegroup-self-hosted.bb b/poky/meta/recipes-core/packagegroups/packagegroup-self-hosted.bb
index adb0c56..9a6721c 100644
--- a/poky/meta/recipes-core/packagegroups/packagegroup-self-hosted.bb
+++ b/poky/meta/recipes-core/packagegroups/packagegroup-self-hosted.bb
@@ -76,24 +76,26 @@
     intltool \
     ldd \
     less \
-    libssp \
-    libssp-dev \
-    libssp-staticdev \
     libstdc++ \
     libstdc++-dev \
     libtool \
     make \
-    mktemp \
     perl-module-re \
     perl-module-text-wrap \
     pkgconfig \
     quilt \
     sed \
     "
-# glibc-utils: for rpcgen
+RDEPENDS_packagegroup-self-hosted-sdk_append_mingw32 = "\
+    libssp \
+    libssp-dev \
+    libssp-staticdev \
+    "
+# rpcsvc-proto: for rpcgen
 RDEPENDS_packagegroup-self-hosted-sdk_append_libc-glibc = "\
     glibc-gconv-ibm850 \
     glibc-utils \
+    rpcsvc-proto \
     "
 RDEPENDS_packagegroup-self-hosted-debug = " \
     gdb \
@@ -185,8 +187,6 @@
     libgl-dev \
     libglu \
     libglu-dev \
-    libsdl \
-    libsdl-dev \
     libx11-dev \
     adwaita-icon-theme \
     xdg-utils \