Typedefs starting with 'b' in FreeBSD

• bool i386/isa/spkr.c:130
• boolean_t vm/vm_param.h:83
• bool_t i386/isa/npx.c:100
• BT_MBI i386/isa/bt742a.c:181
• BT_MBO i386/isa/bt742a.c:173