Typedefs starting with `t' in bsd4-4

• tcflag_t sys/termios.h:174
• tcp_seq netinet/tcp.h:36
• time_t nfs/nfs_nqlease.c:77
• tpcb_struct netiso/tp.trans:131
• tp_PCB_ netiso/tp_driver.c:64
• tpr_t sys/tprintf.h:36