set freebsd mbuf vlan information when the vlan_strip is enable && get ether_type error when the vlan_strip is disabled

Modified vlan code.

Update ff_dpdk_if.c

update codes.

Update ff_dpdk_if.c

code aligned.

fix bug: Can not support more than 32 processes

Tools: update top.

Tools: All tools can work in parallel now.

support more than 32 processes; support 52bytes rsskey; compile failed.

IPv6: support multi-processes, deep copy NDP packet and dispatch.

IPv6: `netstat` tool support ipv6.

Always define FF_IOCTL6, because `top` and other tools not distinguish between inet or inet6

Fix define PF_INET6_LINUX

IPv6: FreeBSD stack and f-stack support ipv6.

set freebsd mbuf vlan information when the vlan_strip is enable && get ether_type error when the vlan_strip is disabled

fix the issue that set the incorrect crc_strip flag.

add `make install` and `make uninstall` in f-tack's lib and tools, refer #396

remove unused code.

Add pkt_tx_delay parameter in config.ini.
It should be default while handling large concurrent requests, otherwise
it will reduce the throughput.
But if there are only a little, you can set it to les

Add pkt_tx_delay parameter in config.ini.
It should be default while handling large concurrent requests, otherwise
it will reduce the throughput.
But if there are only a little, you can set it to less than 100, even to
0, to reduce the delay of the connection.

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modify RTE_MAX to RTE_ALIGN_CEIL while init mempool.

Reupgrade DPDK to 18.11.