Defines starting with `o' in BSD4-4

• O kern/tty.c:80
• O_ACCMODE sys/fcntl.h:65
• O_APPEND sys/fcntl.h:80
• O_ASYNC sys/fcntl.h:84
• OBJ_ACTIVE vm/vm_object.h:105
• OBJ_CANPERSIST vm/vm_object.h:103
• OBJ_INTERNAL vm/vm_object.h:104
• OBJ_ITEM netiso/xebec/sets.h:10
• OBJ_SET netiso/xebec/sets.h:11
• OBUFSIZ sys/tty.h:106
• O_CREAT sys/fcntl.h:87
• ODDP sys/ioctl_compat.h:100
• O_EXCL sys/fcntl.h:89
• O_EXLOCK sys/fcntl.h:83
• OFILESIZE sys/filedesc.h:88
• O_FSYNC sys/fcntl.h:85
• OLDDIRFMT ufs/ufs/dir.h:113
• OMAGIC i386/include/exec.h:71
• OMAP_ANON vm/vm_mmap.c:153
• OMAP_COPY vm/vm_mmap.c:154
• OMAP_FIXED vm/vm_mmap.c:156
• OMAP_INHERIT vm/vm_mmap.c:157
• OMAP_SHARED vm/vm_mmap.c:155
• O_NDELAY sys/fcntl.h:121
• ONLCR sys/termios.h:110
• ONLINE i386/isa/wt.c:169
• ONLYA kern/tty.c:1822
• ONLYB kern/tty.c:1823
• O_NOCTTY sys/fcntl.h:97
• ONOEOT sys/termios.h:112
• O_NONBLOCK sys/fcntl.h:79
• OPCHAR netiso/xebec/llscan.c:23
• OPEN i386/isa/wd.c:90
• OPEN_MAX sys/syslimits.h:43
• OPENRAW i386/isa/wd.c:94
• OPMASK sys/namei.h:100
• OPOST sys/termios.h:108
• OPTSIZ netinet/ip_input.c:891
• ORDINARY sys/tty.h:138
• O_RDONLY sys/fcntl.h:62
• O_RDWR sys/fcntl.h:64
• O_SHLOCK sys/fcntl.h:82
• OSIOCGIFADDR sys/sockio.h:54
• OSIOCGIFBRDADDR sys/sockio.h:61
• OSIOCGIFCONF sys/sockio.h:64
• OSIOCGIFDSTADDR sys/sockio.h:57
• OSIOCGIFNETMASK sys/sockio.h:66
• OTHERS ufs/ufs/ufs_lockf.c:65
• OTIOCCONS sys/ioctl_compat.h:162
• O_TRUNC sys/fcntl.h:88
• OTTYDISC sys/ioctl_compat.h:163
• OUT netiso/xebec/debug.h:4
• ovbcopy net/slcompress.c:66
• O_WRONLY sys/fcntl.h:63
• OXTABS sys/termios.h:111