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/classes/rm_work.bbclass b/poky/meta/classes/rm_work.bbclass
index 31d99e4..10e134b 100644
--- a/poky/meta/classes/rm_work.bbclass
+++ b/poky/meta/classes/rm_work.bbclass
@@ -47,59 +47,60 @@
     cd `dirname ${STAMP}`
     for i in `basename ${STAMP}`*
     do
-        for j in ${SSTATETASKS} do_shared_workdir
-        do
-            case $i in
-            *do_setscene*)
-                break
-                ;;
-            *sigdata*|*sigbasedata*)
-                i=dummy
-                break
-                ;;
-            *do_package_write*)
-                i=dummy
-                break
-                ;;
-            *do_image_complete*)
-                mv $i `echo $i | sed -e "s#do_image_complete#do_image_complete_setscene#"`
-                i=dummy
-                break
-                ;;
-            *do_rootfs*|*do_image*|*do_bootimg*|*do_write_qemuboot_conf*)
-                i=dummy
-                break
-                ;;
-            *do_build*)
-                i=dummy
-                break
-                ;;
-            *do_addto_recipe_sysroot*)
-                # Preserve recipe-sysroot-native if do_addto_recipe_sysroot has been used
-                excludes="$excludes recipe-sysroot-native"
-                i=dummy
-                break
-                ;;
+        # By default we'll delete the stamp, unless $i is changed by the inner loop
+        # (i=dummy does this)
+
+        case $i in
+        *sigdata*|*sigbasedata*)
+            # Save/skip anything that looks like a signature data file.
+            i=dummy
+            ;;
+        *do_image_complete_setscene*)
+            # Ensure we don't 'stack' setscene extensions to this stamp with the section below
+            i=dummy
+            ;;
+        *do_image_complete*)
+            # Promote do_image_complete stamps to setscene versions (ahead of *do_image* below)
+            mv $i `echo $i | sed -e "s#do_image_complete#do_image_complete_setscene#"`
+            i=dummy
+            ;;
+        *do_package_write*|*do_rootfs*|*do_image*|*do_bootimg*|*do_write_qemuboot_conf*|*do_build*)
+            i=dummy
+            ;;
+        *do_addto_recipe_sysroot*)
+            # Preserve recipe-sysroot-native if do_addto_recipe_sysroot has been used
+            excludes="$excludes recipe-sysroot-native"
+            i=dummy
+            ;;
+        *do_package|*do_package.*|*do_package_setscene.*)
             # We remove do_package entirely, including any
             # sstate version since otherwise we'd need to leave 'plaindirs' around
             # such as 'packages' and 'packages-split' and these can be large. No end
             # of chain tasks depend directly on do_package anymore.
-            *do_package|*do_package.*|*do_package_setscene.*)
-                rm -f $i;
-                i=dummy
-                break
-                ;;
-            *_setscene*)
-                i=dummy
+            rm -f $i;
+            i=dummy
+            ;;
+        *_setscene*)
+            # Skip stamps which are already setscene versions
+            i=dummy
+            ;;
+        esac
+
+        for j in ${SSTATETASKS} do_shared_workdir
+        do
+            case $i in
+            dummy)
                 break
                 ;;
             *$j|*$j.*)
+                # Promote the stamp to a setscene version
                 mv $i `echo $i | sed -e "s#${j}#${j}_setscene#"`
                 i=dummy
                 break
-            ;;
+                ;;
             esac
         done
+
         rm -f $i
     done