Defines starting with `t' in bsd/kern

• TB bsd/kern/tty.c:173
• TBF_INPROX bsd/kern/tty_tb.c:89
• TBF_POL bsd/kern/tty_tb.c:88
• TBMAXREC bsd/kern/tty_tb.c:115
• tick bsd/kern/kern_clock.c:146
• TTYDEFCHARS bsd/kern/tty.c:101