meta-openembedded and poky: subtree updates

Squash of the following due to dependencies among them
and OpenBMC changes:

meta-openembedded: subtree update:d0748372d2..9201611135
meta-openembedded: subtree update:9201611135..17fd382f34
poky: subtree update:9052e5b32a..2e11d97b6c
poky: subtree update:2e11d97b6c..a8544811d7

The change log was too large for the jenkins plugin
to handle therefore it has been removed. Here is
the first and last commit of each subtree:

meta-openembedded:d0748372d2
      cppzmq: bump to version 4.6.0
meta-openembedded:17fd382f34
      mpv: Remove X11 dependency
poky:9052e5b32a
      package_ipk: Remove pointless comment to trigger rebuild
poky:a8544811d7
      pbzip2: Fix license warning

Change-Id: If0fc6c37629642ee207a4ca2f7aa501a2c673cd6
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
diff --git a/poky/bitbake/lib/bb/ui/taskexp.py b/poky/bitbake/lib/bb/ui/taskexp.py
index 50a943c..8fff244 100644
--- a/poky/bitbake/lib/bb/ui/taskexp.py
+++ b/poky/bitbake/lib/bb/ui/taskexp.py
@@ -11,10 +11,8 @@
 import gi
 gi.require_version('Gtk', '3.0')
 from gi.repository import Gtk, Gdk, GObject
-from multiprocessing import Queue
 import threading
 from xmlrpc import client
-import time
 import bb
 import bb.event
 
@@ -202,7 +200,7 @@
         if error:
             print("Error running command '%s': %s" % (cmdline, error))
             return 1
-        elif ret != True:
+        elif not ret:
             print("Error running command '%s': returned %s" % (cmdline, ret))
             return 1
     except client.Fault as x: