Sync netinet/tcp.h with upstream Linux kernel.
[BZ# 15003]
* sysdeps/gnu/netinet/tcp.h (TCP_COOKIE_TRANSACTIONS,
TCP_THIN_LINEAR_TIMEOUTS, TCP_THIN_DUPACK, TCP_USER_TIMEOUT,
TCP_REPAIR, TCP_REPAIR_QUEUE, TCP_QUEUE_SEQ, TCP_REPAIR_OPTIONS,
TCP_FASTOPEN): Define.
(tcp_repair_opt): New structure.
(TCP_NO_QUEUE, TCP_RECV_QUEUE, TCP_SEND_QUEUE, TCP_QUEUES_NR): New
enum values.
(TCP_COOKIE_MIN, TCP_COOKIE_MAX, TCP_COOKIE_PAIR_SIZE,
TCP_COOKIE_IN_ALWAYS, TCP_COOKIE_OUT_NEVER, TCP_S_DATA_IN,
TCP_S_DATA_OUT, TCP_MSS_DEFAULT, TCP_MSS_DESIRED): Define.
(tcp_cookie_transactions): New structure.