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-sato/webkit/webkitgtk/0012-soup-Forward-declare-URL-class.patch b/poky/meta/recipes-sato/webkit/webkitgtk/0012-soup-Forward-declare-URL-class.patch
new file mode 100644
index 0000000..78fd4dc
--- /dev/null
+++ b/poky/meta/recipes-sato/webkit/webkitgtk/0012-soup-Forward-declare-URL-class.patch
@@ -0,0 +1,31 @@
+From 59f6903ad96f3213f248b672d5fd526cc0d666ce Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Sun, 20 May 2018 14:28:27 -0700
+Subject: [PATCH] soup: Forward declare URL class
+
+This helps getting away with compiler errors seen with clang
+
+/mnt/a/oe/workspace/sources/webkitgtk/Source/WebCore/platform/network/soup/SoupNetworkSession.h:68:62:
+error: unknown type name 'URL'
+    static std::optional<ResourceError> checkTLSErrors(const URL&,
+GTlsCertificate*, GTlsCertificateFlags);
+                                                             ^
+Upstream-Status: Backport [https://trac.webkit.org/changeset/231876/webkit]
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ Source/WebCore/platform/network/soup/SoupNetworkSession.h | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/Source/WebCore/platform/network/soup/SoupNetworkSession.h b/Source/WebCore/platform/network/soup/SoupNetworkSession.h
+index 03bd72ba..7ca8792d 100644
+--- a/Source/WebCore/platform/network/soup/SoupNetworkSession.h
++++ b/Source/WebCore/platform/network/soup/SoupNetworkSession.h
+@@ -43,6 +43,7 @@ namespace WebCore {
+ 
+ class CertificateInfo;
+ class ResourceError;
++class URL;
+ struct SoupNetworkProxySettings;
+ 
+ class SoupNetworkSession {