Merge remote-tracking branch 'rransom-tor/bug3456'

  /** How to extend to the planned exit node. */

  extend_info_t *chosen_exit;

  /** Whether every node in the circ must have adequate uptime. */

  int need_uptime;

  unsigned int need_uptime : 1;

  /** Whether every node in the circ must have adequate capacity. */

  int need_capacity;

  unsigned int need_capacity : 1;

  /** Whether the last hop was picked with exiting in mind. */

  int is_internal;

  /** Did we pick this as a one-hop tunnel (not safe for other conns)?

   * These are for encrypted connections that exit to this router, not

  unsigned int is_internal : 1;

  /** Did we pick this as a one-hop tunnel (not safe for other streams)?

   * These are for encrypted dir conns that exit to this router, not

   * for arbitrary exits from the circuit. */

  int onehop_tunnel;

  unsigned int onehop_tunnel : 1;

  /** The crypt_path_t to append after rendezvous: used for rendezvous. */

  crypt_path_t *pending_final_cpath;

  /** How many times has building a circuit for this task failed? */