Fix bugs: change the default RTE_ARCH from x86_64-default-... to
x86_64-native... for suiting DPDK 1.7.1
add odp_kni.c and odp_kni.h to support KNI. use system stack to deal pkts that opendp cannot
deal with.
to support odp_kni module
modified Makefine to compile the program in C99 mode.
add the interface used by NETDP to sendpackets to system network stack.
modified interface, clean the temp interface XXX_config_set, modified the interface like XXX_config(struct *** user_conf, mempool...)
modified the interface of KNI module
Merge pull request #1 from luqiuwen/develop

Each port has a kni interface, packets which can't be handled in netdp would be forward  to linux kernel by kni interface.