Full switch to clang/ELF. Drop ack. Simplify.

There is important information about booting non-ack images in
docs/UPDATING. ack/aout-format images can't be built any more, and
booting clang/ELF-format ones is a little different. Updating to the
new boot monitor is recommended.

Changes in this commit:

	. drop boot monitor -> allowing dropping ack support
	. facility to copy ELF boot files to /boot so that old boot monitor
	  can still boot fairly easily, see UPDATING
	. no more ack-format libraries -> single-case libraries
	. some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases
	. drop several ack toolchain commands, but not all support
	  commands (e.g. aal is gone but acksize is not yet).
	. a few libc files moved to netbsd libc dir
	. new /bin/date as minix date used code in libc/
	. test compile fix
	. harmonize includes
	. /usr/lib is no longer special: without ack, /usr/lib plays no
	  kind of special bootstrapping role any more and bootstrapping
	  is done exclusively through packages, so releases depend even
	  less on the state of the machine making them now.
	. rename nbsd_lib* to lib*
	. reduce mtree

include/glob.h

@@ -1,3 +1,5 @@
+/*	$NetBSD: glob.h,v 1.26 2010/09/06 14:38:56 christos Exp $	*/
+
 /*
  * Copyright (c) 1989, 1993
  *	The Regents of the University of California.  All rights reserved.
@@ -35,11 +37,22 @@
 #ifndef _GLOB_H_
 #define	_GLOB_H_
 
-struct stat;
+#include <sys/cdefs.h>
+#include <sys/featuretest.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#ifndef __gl_size_t
+#define __gl_size_t	size_t
+#endif
+#ifndef __gl_stat_t
+#define __gl_stat_t	struct stat
+#endif
+
 typedef struct {
-	int gl_pathc;		/* Count of total paths so far. */
-	int gl_matchc;		/* Count of paths matching pattern. */
-	int gl_offs;		/* Reserved at beginning of gl_pathv. */
+	__gl_size_t gl_pathc;	/* Count of total paths so far. */
+	__gl_size_t gl_matchc;	/* Count of paths matching pattern. */
+	__gl_size_t gl_offs;	/* Reserved at beginning of gl_pathv. */
 	int gl_flags;		/* Copy of flags parameter to glob. */
 	char **gl_pathv;	/* List of paths matching pattern. */
 				/* Copy of errfunc parameter to glob. */
@@ -53,8 +66,8 @@ typedef struct {
 	void (*gl_closedir)(void *);
 	struct dirent *(*gl_readdir)(void *);	
 	void *(*gl_opendir)(const char *);
-	int (*gl_lstat)(const char *, struct stat *);
-	int (*gl_stat)(const char *, struct stat *);
+	int (*gl_lstat)(const char *, __gl_stat_t *);
+	int (*gl_stat)(const char *, __gl_stat_t *);
 } glob_t;
 
 #define	GLOB_APPEND	0x0001	/* Append to output from previous call. */
@@ -67,23 +80,34 @@ typedef struct {
 
 #define	GLOB_NOSPACE	(-1)	/* Malloc call failed. */
 #define	GLOB_ABORTED	(-2)	/* Unignored error. */
-#define	GLOB_NOMATCH	(-3)	/* No match and GLOB_NOCHECK not set. */
-#define	GLOB_NOSYS	(-4)	/* Function not supported. */
-
+#define	GLOB_NOMATCH	(-3)	/* No match, and GLOB_NOCHECK was not set. */
+#define	GLOB_NOSYS	(-4)	/* Implementation does not support function. */
 
+#if defined(_NETBSD_SOURCE) || defined(HAVE_NBTOOL_CONFIG_H)
 #define	GLOB_ALTDIRFUNC	0x0040	/* Use alternately specified directory funcs. */
 #define	GLOB_BRACE	0x0080	/* Expand braces ala csh. */
 #define	GLOB_MAGCHAR	0x0100	/* Pattern had globbing characters. */
 #define	GLOB_NOMAGIC	0x0200	/* GLOB_NOCHECK without magic chars (csh). */
-#define	GLOB_QUOTE	0x0400	/* Quote special chars with \. */
+#define	GLOB_LIMIT	0x0400	/* Limit memory used by matches to ARG_MAX */
 #define	GLOB_TILDE	0x0800	/* Expand tilde names from the passwd file. */
-#define GLOB_LIMIT	0x2000	/* Limit pattern match output to ARG_MAX */
-#define GLOB_ABEND	GLOB_ABORTED /* backward compatibility */
+/*	GLOB_NOESCAPE	0x1000	above */
+#define	GLOB_PERIOD	0x2000	/* Allow metachars to match leading periods. */
+#define	GLOB_NO_DOTDIRS	0x4000	/* Make . and .. vanish from wildcards. */
+#define	GLOB_STAR	0x8000	/* Use glob ** to recurse directories */
+#define	GLOB_QUOTE	0	/* source compatibility */
 
+#define	GLOB_ABEND	GLOB_ABORTED	/* source compatibility */
+#endif
 
-
-int	glob(const char *, int, int (*)(const char *, int), glob_t *);
-void	globfree(glob_t *);
-
+__BEGIN_DECLS
+#ifndef __LIBC12_SOURCE__
+int	glob(const char * __restrict, int,
+    int (*)(const char *, int), glob_t * __restrict)	 __RENAME(__glob30);
+void	globfree(glob_t *)				 __RENAME(__globfree30);
+#endif
+#ifdef _NETBSD_SOURCE
+int	glob_pattern_p(const char *, int);
+#endif
+__END_DECLS
 
 #endif /* !_GLOB_H_ */