0_7_0_13 Sync to core team's development branch

* In the datapath:
- Add IMCP packet support
- Add "strip_vlan" action support
- Add "mod_vlan_vid" action support
- Add "mod_vlan_pcp" action support
- Add "drop" action support
- Add support for multiple actions per flow
* Bug fixes
* Apply patches from the mailing list below
_______________________________________________________________________
[PATCH] dpif-dpdk: Add unix socket to wake up vswitchd
From: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Reviewed-by: Hayato Momma <h-momma@ce.jp.nec.com>
_______________________________________________________________________
[PATCH] dpif-dpdk: fix memory leak in dpdk_link_send_bulk()
From: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Reviewed-by: Hayato Momma <h-momma@ce.jp.nec.com>
_______________________________________________________________________
[PATCH] lib/dpdk: make vlog usable
From: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Reviewed-by: Hayato Momma <h-momma@ce.jp.nec.com>
_______________________________________________________________________
[PATCH 1/3] datapath/dpdk: make flow_table_clear_stats() static
From: Hiroshi Shimamoto <h-shimamoto at ct.jp.nec.com>
Signed-off-by: Hiroshi Shimamoto <h-shimamoto at ct.jp.nec.com>
Reviewed-by: Hayato Momma <h-momma at ce.jp.nec.com>
_______________________________________________________________________
[PATCH 2/3] datapath/dpdk: use pos directory instead of lookup again
From: Hiroshi Shimamoto <h-shimamoto at ct.jp.nec.com>
Signed-off-by: Hiroshi Shimamoto <h-shimamoto at ct.jp.nec.com>
Reviewed-by: Hayato Momma <h-momma at ce.jp.nec.com>
_______________________________________________________________________
[PATCH 3/3] dpif-dpdk, datapath/dpdk: support multi actions
From: Hiroshi Shimamoto <h-shimamoto at ct.jp.nec.com>
Signed-off-by: Hiroshi Shimamoto <h-shimamoto at ct.jp.nec.com>
Reviewed-by: Hayato Momma <h-momma at ce.jp.nec.com>