0_7_0_7 Sync to core team's development branch

*Fix warning for switch statement where not all elements of enum were
switched on
*Apply the patch below
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From: Hayato Momma <h-momma@ce.jp.nec.com>
Signed-off-by: Hayato Momma <h-momma@ce.jp.nec.com>
Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
[PATCH] Support ICMP message in datapath
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