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/lib/bblayers/templates/layer.conf b/poky/meta/lib/bblayers/templates/layer.conf
index 3c03002..e2eaff4 100644
--- a/poky/meta/lib/bblayers/templates/layer.conf
+++ b/poky/meta/lib/bblayers/templates/layer.conf
@@ -1,10 +1,13 @@
 # We have a conf and classes directory, add to BBPATH
-BBPATH .= ":${LAYERDIR}"
+BBPATH .= ":${{LAYERDIR}}"
 
 # We have recipes-* directories, add to BBFILES
-BBFILES += "${LAYERDIR}/recipes-*/*/*.bb \
-            ${LAYERDIR}/recipes-*/*/*.bbappend"
+BBFILES += "${{LAYERDIR}}/recipes-*/*/*.bb \
+            ${{LAYERDIR}}/recipes-*/*/*.bbappend"
 
-BBFILE_COLLECTIONS += "%s"
-BBFILE_PATTERN_%s = "^${LAYERDIR}/"
-BBFILE_PRIORITY_%s = "%s"
+BBFILE_COLLECTIONS += "{layername}"
+BBFILE_PATTERN_{layername} = "^${{LAYERDIR}}/"
+BBFILE_PRIORITY_{layername} = "{priority}"
+
+LAYERDEPENDS_{layername} = "core"
+LAYERSERIES_COMPAT_{layername} = "{compat}"