Fixed issue #44.

Removed unnesessary include <sys/types.h> from stdio.h, stdlib.h,
string.h, strings.h and time.h.

include/stddef.h

@@ -1,8 +1,22 @@
+#ifndef _STDDEF_H_
+#define _STDDEF_H_
+
+typedef int ptrdiff_t;
+
+#ifndef _SIZE_T
+#define _SIZE_T
+typedef unsigned size_t;
+#endif
+
+#ifndef NULL
+#define NULL    0
+#endif
 
 /* Offset of member MEMBER in a struct of type TYPE. */
-
 #if defined(__GNUC__) && __GNUC__ > 3
 #define offsetof(TYPE, MEMBER) __builtin_offsetof (TYPE, MEMBER)
 #else
 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE*)0)->MEMBER)
 #endif
+
+#endif /* _STDDEF_H_ */

include/stdio.h

@@ -5,8 +5,6 @@
  */
 #ifndef FILE
 
-#include <sys/types.h>
-
 #define	BUFSIZ	1024
 extern	struct	_iobuf {
 	int	_cnt;
@@ -40,6 +38,11 @@ extern	struct	_iobuf {
 #define	NULL	0
 #endif
 
+#ifndef _SIZE_T
+#define _SIZE_T
+typedef unsigned size_t;
+#endif
+
 #define	FILE	struct _iobuf
 #define	EOF	(-1)
 

include/stdlib.h

@@ -43,8 +43,6 @@
 #ifndef _STDLIB_H_
 #define _STDLIB_H_
 
-#include <sys/types.h>
-
 #ifndef NULL
 #define	NULL	0
 #endif
@@ -54,6 +52,11 @@
 
 #define	RAND_MAX	0x7fff
 
+#ifndef _SIZE_T
+#define _SIZE_T
+typedef unsigned size_t;
+#endif
+
 void	abort (void);
 int	abs (int);
 int	atexit (void (*)(void));
@@ -83,7 +86,7 @@ char	*_findenv (const char *name, int *offset);
 void	*alloca (size_t size);
 
 int	daemon (int, int);
-char	*devname (dev_t dev, mode_t type);
+char	*devname (int dev, int type);
 int	getloadavg (unsigned loadavg[], int nelem);
 
 extern char *suboptarg;			/* getsubopt(3) external variable */

include/string.h

@@ -3,12 +3,15 @@
  * All rights reserved.  The Berkeley software License Agreement
  * specifies the terms and conditions for redistribution.
  */
-#include <sys/types.h>
-
 #ifndef	NULL
 #define	NULL	0
 #endif
 
+#ifndef _SIZE_T
+#define _SIZE_T
+typedef unsigned size_t;
+#endif
+
 char	*strcat (char *, const char *);
 char	*strncat (char *, const char *, size_t);
 char	*strcpy (char *, const char *);

include/strings.h

@@ -30,7 +30,10 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
-#include <sys/types.h>
+#ifndef _SIZE_T
+#define _SIZE_T
+typedef unsigned size_t;
+#endif
 
 int      bcmp(const void *, const void *, size_t);
 void     bcopy(const void *, void *, size_t);

include/time.h

@@ -6,7 +6,15 @@
 #ifndef _TIME_H
 #define _TIME_H
 
-#include <sys/types.h>		/* for time_t */
+#ifndef _TIME_T
+#define _TIME_T
+typedef long time_t;
+#endif
+
+#ifndef _SIZE_T
+#define _SIZE_T
+typedef unsigned size_t;
+#endif
 
 /*
  * Structure returned by gmtime and localtime calls (see ctime(3)).

src/cmd/su.c

@@ -6,7 +6,6 @@
 #include <stdio.h>
 #include <string.h>
 #include <pwd.h>
-#include <grp.h>
 #include <syslog.h>
 #include <stdlib.h>
 #include <unistd.h>
@@ -14,6 +13,7 @@
 #include <sys/types.h>
 #include <sys/time.h>
 #include <sys/resource.h>
+#include <grp.h>
 
 char    userbuf[64] = "USER=";
 char    homebuf[128]    = "HOME=";

src/libc/gen/getgrent.c

@@ -1,5 +1,6 @@
 #include <stdio.h>
 #include <stdlib.h>
+#include <sys/types.h>
 #include <grp.h>
 
 #define	MAXGRP	200

sys/include/stat.h

@@ -6,6 +6,8 @@
 #ifndef	_STAT_H_
 #define	_STAT_H_
 
+#include <sys/time.h>
+
 struct	stat
 {
 	dev_t	st_dev;

sys/include/types.h

@@ -50,7 +50,10 @@ typedef int     ssize_t;
 #define _SSIZE_T
 #endif
 #endif
+#ifndef _TIME_T
+#define _TIME_T
 typedef long time_t;
+#endif
 typedef	int	dev_t;
 #ifndef	_OFF_T
 #define	_OFF_T