Structs starting with `w' in bsd4-4

• wait_args kern/kern_exit.c:268
• walkarg net/rtsock.c:54
• we_ring i386/isa/if_wereg.h:69
• wer_status i386/isa/if_wereg.h:70
• we_softc i386/isa/if_we.c:98
• winsize sys/ioctl.h:44
• write_args kern/sys_generic.c:200
• writev_args kern/sys_generic.c:259
• wtstatus i386/isa/wt.c:230