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/meta/recipes-devtools/gcc/libgcc.inc b/poky/meta/recipes-devtools/gcc/libgcc.inc
index e008d14..6d48ec9 100644
--- a/poky/meta/recipes-devtools/gcc/libgcc.inc
+++ b/poky/meta/recipes-devtools/gcc/libgcc.inc
@@ -9,14 +9,18 @@
 			"linux-musleabi") extra_target_os="linux-gnueabi";;
 			*) extra_target_os="linux";;
 		esac
-		ln -s ${TARGET_SYS} ${D}${libdir}/${TARGET_ARCH}${TARGET_VENDOR}-$extra_target_os
+		if [ ! -e ${D}${libdir}/${TARGET_ARCH}${TARGET_VENDOR}-$extra_target_os ]; then
+			ln -s ${TARGET_SYS} ${D}${libdir}/${TARGET_ARCH}${TARGET_VENDOR}-$extra_target_os
+		fi
 	fi
 	if [ -n "${@ bb.utils.contains('TUNE_CCARGS_MFLOAT', 'hard', 'hf', '', d)}" ]; then
 		case "${TARGET_OS}" in
 			"linux-musleabi") extra_target_os="linux-musleabihf";;
 			"linux-gnueabi") extra_target_os="linux-gnueabihf";;
 		esac
-		ln -s ${TARGET_SYS} ${D}${libdir}/${TARGET_ARCH}${TARGET_VENDOR}-$extra_target_os
+		if [ ! -e ${D}${libdir}/${TARGET_ARCH}${TARGET_VENDOR}-$extra_target_os ]; then
+			ln -s ${TARGET_SYS} ${D}${libdir}/${TARGET_ARCH}${TARGET_VENDOR}-$extra_target_os
+		fi
 	fi
 }