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/fts.h

@@ -1,3 +1,5 @@
+/*	$NetBSD: fts.h,v 1.19 2009/08/16 19:33:38 christos Exp $	*/
+
 /*
  * Copyright (c) 1989, 1993
  *	The Regents of the University of California.  All rights reserved.
@@ -10,11 +12,7 @@
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by the University of
- *	California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
+ * 3. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *
@@ -31,12 +29,33 @@
  * SUCH DAMAGE.
  *
  *	@(#)fts.h	8.3 (Berkeley) 8/14/94
- * $FreeBSD: src/include/fts.h,v 1.11 2005/01/07 00:06:20 pjd Exp $
  */
 
 #ifndef	_FTS_H_
 #define	_FTS_H_
 
+#ifndef	__fts_stat_t
+#define	__fts_stat_t	struct stat
+#endif
+#ifndef	__fts_nlink_t
+#define	__fts_nlink_t	nlink_t
+#endif
+#ifndef	__fts_ino_t
+#define	__fts_ino_t	ino_t
+#endif
+#ifndef	__fts_length_t
+#define	__fts_length_t	unsigned int
+#endif
+#ifndef	__fts_number_t
+#define	__fts_number_t	int64_t
+#endif
+#ifndef	__fts_dev_t
+#define	__fts_dev_t	dev_t
+#endif
+#ifndef	__fts_level_t
+#define	__fts_level_t	int
+#endif
+
 typedef struct {
 	struct _ftsent *fts_cur;	/* current node */
 	struct _ftsent *fts_child;	/* linked list of children */
@@ -44,10 +63,10 @@ typedef struct {
 	dev_t fts_dev;			/* starting device # */
 	char *fts_path;			/* path for this descent */
 	int fts_rfd;			/* fd for root */
-	int fts_pathlen;		/* sizeof(path) */
-	int fts_nitems;			/* elements in the sort array */
+	unsigned int fts_pathlen;	/* sizeof(path) */
+	unsigned int fts_nitems;	/* elements in the sort array */
 	int (*fts_compar)		/* compare function */
-	    (const struct _ftsent * const *, const struct _ftsent * const *);
+		(const struct _ftsent **, const struct _ftsent **);
 
 #define	FTS_COMFOLLOW	0x001		/* follow command line symlinks */
 #define	FTS_LOGICAL	0x002		/* logical walk */
@@ -56,44 +75,36 @@ typedef struct {
 #define	FTS_PHYSICAL	0x010		/* physical walk */
 #define	FTS_SEEDOT	0x020		/* return dot and dot-dot */
 #define	FTS_XDEV	0x040		/* don't cross devices */
+#ifndef __minix
+#define	FTS_WHITEOUT	0x080		/* return whiteout information */
+#endif 
 #define	FTS_OPTIONMASK	0x0ff		/* valid user option mask */
 
 #define	FTS_NAMEONLY	0x100		/* (private) child names only */
 #define	FTS_STOP	0x200		/* (private) unrecoverable error */
 	int fts_options;		/* fts_open options, global flags */
-	void *fts_clientptr;		/* thunk for sort function */
 } FTS;
 
 typedef struct _ftsent {
 	struct _ftsent *fts_cycle;	/* cycle node */
 	struct _ftsent *fts_parent;	/* parent directory */
 	struct _ftsent *fts_link;	/* next file in directory */
-	union {
-		struct {
-			long __fts_number;	/* local numeric value */
-			void *__fts_pointer;	/* local address value */
-		} __struct_ftsent;
-#if 0
-		int64_t __fts_bignum;
-#endif
-	} __union_ftsent;
-#define	fts_number	__union_ftsent.__struct_ftsent.__fts_number
-#define	fts_pointer	__union_ftsent.__struct_ftsent.__fts_pointer
-#define	fts_bignum	__union_ftsent.__fts_bignum
+	__fts_number_t fts_number;      /* local numeric value */
+	void *fts_pointer;	        /* local address value */
 	char *fts_accpath;		/* access path */
 	char *fts_path;			/* root path */
 	int fts_errno;			/* errno for this node */
 	int fts_symfd;			/* fd for symlink */
-	u_short fts_pathlen;		/* strlen(fts_path) */
-	u_short fts_namelen;		/* strlen(fts_name) */
+	__fts_length_t fts_pathlen;	/* strlen(fts_path) */
+	__fts_length_t fts_namelen;	/* strlen(fts_name) */
 
-	ino_t fts_ino;			/* inode */
-	dev_t fts_dev;			/* device */
-	nlink_t fts_nlink;		/* link count */
+	__fts_ino_t fts_ino;		/* inode */
+	__fts_dev_t fts_dev;		/* device */
+	__fts_nlink_t fts_nlink;	/* link count */
 
 #define	FTS_ROOTPARENTLEVEL	-1
 #define	FTS_ROOTLEVEL		 0
-	short fts_level;		/* depth (-1 to N) */
+	__fts_level_t fts_level;		/* depth (-1 to N) */
 
 #define	FTS_D		 1		/* preorder directory */
 #define	FTS_DC		 2		/* directory that causes cycles */
@@ -109,34 +120,34 @@ typedef struct _ftsent {
 #define	FTS_SL		12		/* symbolic link */
 #define	FTS_SLNONE	13		/* symbolic link without target */
 #define	FTS_W		14		/* whiteout object */
-	u_short fts_info;		/* user flags for FTSENT structure */
+	unsigned short fts_info;	/* user flags for FTSENT structure */
 
 #define	FTS_DONTCHDIR	 0x01		/* don't chdir .. to the parent */
 #define	FTS_SYMFOLLOW	 0x02		/* followed a symlink to get here */
 #define	FTS_ISW		 0x04		/* this is a whiteout object */
-	u_short fts_flags;		/* private flags for FTSENT structure */
+	unsigned short fts_flags;	/* private flags for FTSENT structure */
 
 #define	FTS_AGAIN	 1		/* read node again */
 #define	FTS_FOLLOW	 2		/* follow symbolic link */
 #define	FTS_NOINSTR	 3		/* no instructions */
 #define	FTS_SKIP	 4		/* discard node */
-	u_short fts_instr;		/* fts_set() instructions */
+	unsigned short fts_instr;	/* fts_set() instructions */
 
-	struct stat *fts_statp;		/* stat(2) information */
-	char *fts_name;			/* file name */
-	FTS *fts_fts;			/* back pointer to main FTS */
+	__fts_stat_t *fts_statp;	/* stat(2) information */
+	char fts_name[1];		/* file name */
 } FTSENT;
 
-FTSENT	*fts_children(FTS *, int);
-int	 fts_close(FTS *);
-void	*fts_get_clientptr(FTS *);
-#define	 fts_get_clientptr(fts)	((fts)->fts_clientptr)
-FTS	*fts_get_stream(FTSENT *);
-#define	 fts_get_stream(ftsent)	((ftsent)->fts_fts)
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+#ifndef	__LIBC12_SOURCE__
+FTSENT	*fts_children(FTS *, int)		__RENAME(__fts_children60);
+int	 fts_close(FTS *)			__RENAME(__fts_close60);
 FTS	*fts_open(char * const *, int,
-	    int (*)(const FTSENT * const *, const FTSENT * const *));
-FTSENT	*fts_read(FTS *);
-int	 fts_set(FTS *, FTSENT *, int);
-void	 fts_set_clientptr(FTS *, void *);
+    int (*)(const FTSENT **, const FTSENT **))	__RENAME(__fts_open60);
+FTSENT	*fts_read(FTS *)			__RENAME(__fts_read60);
+int	 fts_set(FTS *, FTSENT *, int)		__RENAME(__fts_set60);
+#endif
+__END_DECLS
 
 #endif /* !_FTS_H_ */