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-openembedded/meta-oe/recipes-test/catch2/catch2/0001-Fix-convert-from-char-on-ARM-build.patch b/meta-openembedded/meta-oe/recipes-test/catch2/catch2/0001-Fix-convert-from-char-on-ARM-build.patch
new file mode 100644
index 0000000..3073775
--- /dev/null
+++ b/meta-openembedded/meta-oe/recipes-test/catch2/catch2/0001-Fix-convert-from-char-on-ARM-build.patch
@@ -0,0 +1,46 @@
+From 5729874fa5059c39aa97cfa08fddf107b7a65c9e Mon Sep 17 00:00:00 2001
+From: Miguel Gaio <mgaio35@gmail.com>
+Date: Wed, 3 Oct 2018 10:22:16 +0200
+Subject: [PATCH] Fix convert from char on ARM build
+
+Some platforms set the signedness of char to unsigned (eg. ARM).
+Convert from char should not assume the signedness of char.
+
+Fix build issue with -Werror,-Wtautological-unsigned-zero-compare flags.
+
+Signed-off-by: Miguel Gaio <mgaio35@gmail.com>
+
+Upstream-Status: Accepted [Commit f1faaa9c107113692301ad8bb56084460ef1a2ff]
+
+Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
+---
+ include/internal/catch_tostring.cpp | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/include/internal/catch_tostring.cpp b/include/internal/catch_tostring.cpp
+index 4e0c027d..8cbabbf2 100644
+--- a/include/internal/catch_tostring.cpp
++++ b/include/internal/catch_tostring.cpp
+@@ -205,7 +205,7 @@ std::string StringMaker<bool>::convert(bool b) {
+     return b ? "true" : "false";
+ }
+ 
+-std::string StringMaker<char>::convert(char value) {
++std::string StringMaker<signed char>::convert(signed char value) {
+     if (value == '\r') {
+         return "'\\r'";
+     } else if (value == '\f') {
+@@ -222,8 +222,8 @@ std::string StringMaker<char>::convert(char value) {
+         return chstr;
+     }
+ }
+-std::string StringMaker<signed char>::convert(signed char c) {
+-    return ::Catch::Detail::stringify(static_cast<char>(c));
++std::string StringMaker<char>::convert(char c) {
++    return ::Catch::Detail::stringify(static_cast<signed char>(c));
+ }
+ std::string StringMaker<unsigned char>::convert(unsigned char c) {
+     return ::Catch::Detail::stringify(static_cast<char>(c));
+-- 
+2.19.1
+
diff --git a/meta-openembedded/meta-oe/recipes-test/catch2/catch2_2.4.1.bb b/meta-openembedded/meta-oe/recipes-test/catch2/catch2_2.4.1.bb
new file mode 100644
index 0000000..0183c2e
--- /dev/null
+++ b/meta-openembedded/meta-oe/recipes-test/catch2/catch2_2.4.1.bb
@@ -0,0 +1,24 @@
+DESCRIPTION = "A modern, C++-native, header-only, test framework for unit-tests, \
+TDD and BDD - using C++11, C++14, C++17 and later."
+AUTHOR = "Phil Nash, Martin Horenovsky and others"
+HOMEPAGE = "https://github.com/catchorg/Catch2"
+LICENSE = "BSL-1.0"
+LIC_FILES_CHKSUM = "file://LICENSE.txt;md5=e4224ccaecb14d942c71d31bef20d78c"
+
+SRC_URI = "git://github.com/catchorg/Catch2.git \
+           file://0001-Fix-convert-from-char-on-ARM-build.patch"
+SRCREV = "9e1bdca4667295fcb16265eae00efa8423f07007"
+
+S = "${WORKDIR}/git"
+
+inherit cmake python3native
+
+# Header-only library
+RDEPENDS_${PN}-dev = ""
+RRECOMMENDS_${PN}-dbg = "${PN}-dev (= ${EXTENDPKGV})"
+
+do_install_append() {
+    rm ${D}/${datadir}/Catch2/lldbinit
+    rm ${D}/${datadir}/Catch2/gdbinit
+    rmdir ${D}/${datadir}/Catch2/
+}