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/documentation/ref-manual/ref-features.xml b/poky/documentation/ref-manual/ref-features.xml
index 44ba67c..294b297 100644
--- a/poky/documentation/ref-manual/ref-features.xml
+++ b/poky/documentation/ref-manual/ref-features.xml
@@ -210,6 +210,12 @@
                 <listitem><para><emphasis>usbhost:</emphasis> Include USB Host
                     support (allows to connect external keyboard, mouse,
                     storage, network etc).</para></listitem>
+                <listitem><para><emphasis>usrmerge:</emphasis> Merges the 
+                    <filename>/bin</filename>, <filename>/sbin</filename>, 
+                    <filename>/lib</filename>, and <filename>/lib64</filename>       
+                    directories into their respective counterparts in the 
+                    <filename>/usr</filename> directory to provide better package 
+                   and application compatibility.</para></listitem>
                 <listitem><para><emphasis>wayland:</emphasis> Include the
                     Wayland display server protocol and the library that
                     supports it.</para></listitem>