Move the _SC_* and _CS_* configurable system variables and strings

from sys/unistd.h to unistd.h.
From Brad; ok millert and me

src/include/unistd.h

@@ -1,4 +1,4 @@
-/*	$OpenBSD: unistd.h,v 1.71 2012/05/14 23:21:35 matthew Exp $ */
+/*	$OpenBSD: unistd.h,v 1.72 2012/05/30 19:34:30 matthew Exp $ */
 /*	$NetBSD: unistd.h,v 1.26.4.1 1996/05/28 02:31:51 mrg Exp $	*/
 
 /*-
@@ -147,6 +147,144 @@
 /* Define the POSIX.2 version we target for compliance. */
 #define _POSIX2_VERSION				199212L
 
+/* the sysconf(3) variable values are part of the ABI */
+
+/* configurable system variables */
+#define	_SC_ARG_MAX		 1
+#define	_SC_CHILD_MAX		 2
+#define	_SC_CLK_TCK		 3
+#define	_SC_NGROUPS_MAX		 4
+#define	_SC_OPEN_MAX		 5
+#define	_SC_JOB_CONTROL		 6
+#define	_SC_SAVED_IDS		 7
+#define	_SC_VERSION		 8
+#define	_SC_BC_BASE_MAX		 9
+#define	_SC_BC_DIM_MAX		10
+#define	_SC_BC_SCALE_MAX	11
+#define	_SC_BC_STRING_MAX	12
+#define	_SC_COLL_WEIGHTS_MAX	13
+#define	_SC_EXPR_NEST_MAX	14
+#define	_SC_LINE_MAX		15
+#define	_SC_RE_DUP_MAX		16
+#define	_SC_2_VERSION		17
+#define	_SC_2_C_BIND		18
+#define	_SC_2_C_DEV		19
+#define	_SC_2_CHAR_TERM		20
+#define	_SC_2_FORT_DEV		21
+#define	_SC_2_FORT_RUN		22
+#define	_SC_2_LOCALEDEF		23
+#define	_SC_2_SW_DEV		24
+#define	_SC_2_UPE		25
+#define	_SC_STREAM_MAX		26
+#define	_SC_TZNAME_MAX		27
+#define	_SC_PAGESIZE		28
+#define	_SC_PAGE_SIZE		_SC_PAGESIZE	/* 1170 compatibility */
+#define	_SC_FSYNC		29
+#define	_SC_XOPEN_SHM		30
+#define	_SC_SEM_NSEMS_MAX	31
+#define	_SC_SEM_VALUE_MAX	32
+#define	_SC_HOST_NAME_MAX	33
+#define	_SC_MONOTONIC_CLOCK	34
+#define	_SC_2_PBS		35
+#define	_SC_2_PBS_ACCOUNTING	36
+#define	_SC_2_PBS_CHECKPOINT	37
+#define	_SC_2_PBS_LOCATE	38
+#define	_SC_2_PBS_MESSAGE	39
+#define	_SC_2_PBS_TRACK		40
+#define	_SC_ADVISORY_INFO	41
+#define	_SC_AIO_LISTIO_MAX	42
+#define	_SC_AIO_MAX		43
+#define	_SC_AIO_PRIO_DELTA_MAX	44
+#define	_SC_ASYNCHRONOUS_IO	45
+#define	_SC_ATEXIT_MAX		46
+#define	_SC_BARRIERS		47
+#define	_SC_CLOCK_SELECTION	48
+#define	_SC_CPUTIME		49
+#define	_SC_DELAYTIMER_MAX	50
+#define	_SC_IOV_MAX		51
+#define	_SC_IPV6		52
+#define	_SC_MAPPED_FILES	53
+#define	_SC_MEMLOCK		54
+#define	_SC_MEMLOCK_RANGE	55
+#define	_SC_MEMORY_PROTECTION	56
+#define	_SC_MESSAGE_PASSING	57
+#define	_SC_MQ_OPEN_MAX		58
+#define	_SC_MQ_PRIO_MAX		59
+#define	_SC_PRIORITIZED_IO	60
+#define	_SC_PRIORITY_SCHEDULING	61
+#define	_SC_RAW_SOCKETS		62
+#define	_SC_READER_WRITER_LOCKS	63
+#define	_SC_REALTIME_SIGNALS	64
+#define	_SC_REGEXP		65
+#define	_SC_RTSIG_MAX		66
+#define	_SC_SEMAPHORES		67
+#define	_SC_SHARED_MEMORY_OBJECTS 68
+#define	_SC_SHELL		69
+#define	_SC_SIGQUEUE_MAX	70
+#define	_SC_SPAWN		71
+#define	_SC_SPIN_LOCKS		72
+#define	_SC_SPORADIC_SERVER	73
+#define	_SC_SS_REPL_MAX		74
+#define	_SC_SYNCHRONIZED_IO	75
+#define	_SC_SYMLOOP_MAX		76
+#define	_SC_THREAD_ATTR_STACKADDR 77
+#define	_SC_THREAD_ATTR_STACKSIZE 78
+#define	_SC_THREAD_CPUTIME	79
+#define	_SC_THREAD_DESTRUCTOR_ITERATIONS 80
+#define	_SC_THREAD_KEYS_MAX	81
+#define	_SC_THREAD_PRIO_INHERIT	82
+#define	_SC_THREAD_PRIO_PROTECT	83
+#define	_SC_THREAD_PRIORITY_SCHEDULING 84
+#define	_SC_THREAD_PROCESS_SHARED 85
+#define	_SC_THREAD_ROBUST_PRIO_INHERIT 86
+#define	_SC_THREAD_ROBUST_PRIO_PROTECT 87
+#define	_SC_THREAD_SPORADIC_SERVER 88
+#define	_SC_THREAD_STACK_MIN	89
+#define	_SC_THREAD_THREADS_MAX	90
+#define	_SC_THREADS		91
+#define	_SC_TIMEOUTS		92
+#define	_SC_TIMER_MAX		93
+#define	_SC_TIMERS		94
+#define	_SC_TRACE		95
+#define	_SC_TRACE_EVENT_FILTER	96
+#define	_SC_TRACE_EVENT_NAME_MAX 97
+#define	_SC_TRACE_INHERIT	98
+#define	_SC_TRACE_LOG		99
+#define	_SC_GETGR_R_SIZE_MAX	100
+#define	_SC_GETPW_R_SIZE_MAX	101
+#define	_SC_LOGIN_NAME_MAX	102
+#define	_SC_THREAD_SAFE_FUNCTIONS 103
+#define	_SC_TRACE_NAME_MAX      104
+#define	_SC_TRACE_SYS_MAX       105
+#define	_SC_TRACE_USER_EVENT_MAX 106
+#define	_SC_TTY_NAME_MAX	107
+#define	_SC_TYPED_MEMORY_OBJECTS 108
+#define	_SC_V6_ILP32_OFF32	109
+#define	_SC_V6_ILP32_OFFBIG	110
+#define	_SC_V6_LP64_OFF64	111
+#define	_SC_V6_LPBIG_OFFBIG	112
+#define	_SC_V7_ILP32_OFF32	113
+#define	_SC_V7_ILP32_OFFBIG	114
+#define	_SC_V7_LP64_OFF64	115
+#define	_SC_V7_LPBIG_OFFBIG	116
+#define	_SC_XOPEN_CRYPT		117
+#define	_SC_XOPEN_ENH_I18N	118
+#define	_SC_XOPEN_LEGACY	119
+#define	_SC_XOPEN_REALTIME	120
+#define	_SC_XOPEN_REALTIME_THREADS 121
+#define	_SC_XOPEN_STREAMS	122
+#define	_SC_XOPEN_UNIX		123
+#define	_SC_XOPEN_UUCP		124
+#define	_SC_XOPEN_VERSION	125
+
+#define	_SC_PHYS_PAGES		500
+#define	_SC_AVPHYS_PAGES	501
+#define	_SC_NPROCESSORS_CONF	502
+#define	_SC_NPROCESSORS_ONLN	503
+
+/* configurable system strings */
+#define	_CS_PATH		 1
+
 #ifndef NULL
 #ifdef 	__GNUG__
 #define	NULL	__null