Fix issues on building match structure.
fix an issue on in_port of packet_out
remove empty line
fix an issue in duplicate_instruction_set()
add  OFPXMT_OFB_METADATA into match of packet-in

1.3.2
The OXM TLVs must include context fields, that is, fields whose values cannot be determined from
the packet data. The standard context fields are OFPXMT_OFB_IN_PORT, OFPXMT_OFB_IN_PHY_PORT,
OFPXMT_OFB_METADATA and OFPXMT_OFB_TUNNEL_ID. Fields whose values are all-bits-zero should be
omitted.
fix memory leak in calloc_packet_info

memory leak would happen when multiple parse_packet
was called on the same buffer.
Merge branch 'packet_info_memleak' of https://github.com/iHiroakiKawai/trema-edge into packet_info_memleak