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/meson/meson/gi-flags.patch b/poky/meta/recipes-devtools/meson/meson/gi-flags.patch
new file mode 100644
index 0000000..9a4c296
--- /dev/null
+++ b/poky/meta/recipes-devtools/meson/meson/gi-flags.patch
@@ -0,0 +1,35 @@
+Pass the correct cflags/ldflags to the gobject-introspection tools.
+
+Upstream-Status: Submitted [https://github.com/mesonbuild/meson/pull/4261]
+Signed-off-by: Ross Burton <ross.burton@intel.com>
+
+diff --git a/mesonbuild/modules/gnome.py b/mesonbuild/modules/gnome.py
+index cb69641e..bb4449a0 100644
+--- a/mesonbuild/modules/gnome.py
++++ b/mesonbuild/modules/gnome.py
+@@ -579,7 +579,10 @@ class GnomeModule(ExtensionModule):
+         external_ldflags += list(dep_external_ldflags)
+         scan_command += ['--cflags-begin']
+         scan_command += cflags
+-        scan_command += state.environment.coredata.get_external_args(lang)
++        if state.environment.is_cross_build():
++            scan_command += state.environment.cross_info.config["properties"].get(lang + '_args', "")
++        else:
++            scan_command += state.environment.coredata.get_external_args(lang)
+         scan_command += ['--cflags-end']
+         # need to put our output directory first as we need to use the
+         # generated libraries instead of any possibly installed system/prefix
+@@ -614,7 +614,12 @@ class GnomeModule(ExtensionModule):
+                 scan_command.append('-L' + d)
+             scan_command += ['--library', libname]
+ 
+-        for link_arg in state.environment.coredata.get_external_link_args(lang):
++        if state.environment.is_cross_build():
++            link_args = state.environment.cross_info.config["properties"].get(lang + '_link_args', "")
++        else:
++            link_args = state.environment.coredata.get_external_link_args(lang)
++
++        for link_arg in link_args:
+             if link_arg.startswith('-L'):
+                 scan_command.append(link_arg)
+         scan_command += list(external_ldflags)