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/meta-raspberrypi/recipes-graphics/userland/files/0015-EGL-glplatform.h-define-EGL_CAST.patch b/meta-raspberrypi/recipes-graphics/userland/files/0015-EGL-glplatform.h-define-EGL_CAST.patch
new file mode 100644
index 0000000..02cecb8
--- /dev/null
+++ b/meta-raspberrypi/recipes-graphics/userland/files/0015-EGL-glplatform.h-define-EGL_CAST.patch
@@ -0,0 +1,32 @@
+From b5fa294c0d8fcb6dd5bfbfb96a0885dd9f3ae609 Mon Sep 17 00:00:00 2001
+From: Andrea Galbusera <gizero@gmail.com>
+Date: Fri, 14 Jul 2017 09:52:54 +0200
+Subject: [PATCH 15/18] EGL/glplatform.h: define EGL_CAST
+
+C++ / C typecast macros for special EGL handle values: used by libepoxy code
+The definition comes from the updated version of this header in mesa.
+
+Upstream-Status: Pending
+---
+ interface/khronos/include/EGL/eglplatform.h | 7 +++++++
+ 1 file changed, 7 insertions(+)
+
+diff --git a/interface/khronos/include/EGL/eglplatform.h b/interface/khronos/include/EGL/eglplatform.h
+index 1f7c930..c39d425 100644
+--- a/interface/khronos/include/EGL/eglplatform.h
++++ b/interface/khronos/include/EGL/eglplatform.h
+@@ -202,4 +202,11 @@ EGLAPI void EGLAPIENTRY BEGL_GetDefaultDriverInterfaces(BEGL_DriverInterfaces *i
+ #include "interface/khronos/common/khrn_client_mangle.h"
+ #endif
+ 
++/* C++ / C typecast macros for special EGL handle values */
++#if defined(__cplusplus)
++#define EGL_CAST(type, value) (static_cast<type>(value))
++#else
++#define EGL_CAST(type, value) ((type) (value))
++#endif
++
+ #endif /* __eglplatform_h */
+-- 
+2.19.1
+