Refer to SysV IPC permissions as numeric constants. POSIX defines no macros for these permissions. Also remove unneeded headers from synopsis. PR: 225905 Reviewed by: wblock MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D14461
head/lib/libc/sys/msgget.2
head/lib/libc/sys/semget.2
head/lib/libc/sys/shmget.2