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/compress_doc.bbclass b/poky/meta/classes/compress_doc.bbclass
index 069d534..45bb8ff 100644
--- a/poky/meta/classes/compress_doc.bbclass
+++ b/poky/meta/classes/compress_doc.bbclass
@@ -79,6 +79,7 @@
     return hardlink_dict
 
 def _process_hardlink(hardlink_dict, compress_mode, shell_cmds, decompress=False):
+    import subprocess
     for target in hardlink_dict:
         if decompress:
             compress_format = _get_compress_format(target, shell_cmds.keys())
@@ -87,7 +88,7 @@
         else:
             cmd = "%s -f %s" % (shell_cmds[compress_mode], target)
             bb.note('compress hardlink %s' % target)
-        (retval, output) = oe.utils.getstatusoutput(cmd)
+        (retval, output) = subprocess.getstatusoutput(cmd)
         if retval:
             bb.warn("de/compress file failed %s (cmd was %s)%s" % (retval, cmd, ":\n%s" % output if output else ""))
             return
@@ -176,7 +177,7 @@
                 # Normal file
                 elif os.path.isfile(file):
                     cmd = "%s %s" % (compress_cmds[compress_mode], file)
-                    (retval, output) = oe.utils.getstatusoutput(cmd)
+                    (retval, output) = subprocess.getstatusoutput(cmd)
                     if retval:
                         bb.warn("compress failed %s (cmd was %s)%s" % (retval, cmd, ":\n%s" % output if output else ""))
                         continue
@@ -206,7 +207,7 @@
                 # Normal file
                 elif os.path.isfile(file):
                     cmd = "%s %s" % (decompress_cmds[compress_format], file)
-                    (retval, output) = oe.utils.getstatusoutput(cmd)
+                    (retval, output) = subprocess.getstatusoutput(cmd)
                     if retval:
                         bb.warn("decompress failed %s (cmd was %s)%s" % (retval, cmd, ":\n%s" % output if output else ""))
                         continue