Defines starting with `s' in bsd/kern

• SECDAY bsd/kern/kern_time.c:213
• SECYR bsd/kern/kern_time.c:214
• SHMSEG_ALLOCATED bsd/kern/sysv_shm.c:93
• SHMSEG_FREE bsd/kern/sysv_shm.c:91
• SHMSEG_REMOVED bsd/kern/sysv_shm.c:92
• SHMSEG_WANTED bsd/kern/sysv_shm.c:94
• SHSIZE bsd/kern/kern_exec.c:149
• SIGPROP bsd/kern/kern_sig.c:63
• snd bsd/kern/uipc_usrreq.c:250
• SPL_DEBUG bsd/kern/bsd_init.c:217
• START_CHAR bsd/kern/tty_pty.c:213
• STK_PARAMS bsd/kern/sys_generic.c:297