Fix header file usage -- there were many unnecessary header files included in

busybox.h which slowed compiles.  I left only what was needed and then fixed up
all the apps to include their own header files.  I also fixed naming for pwd.h
and grp.h functions.  Tested to compile and run with libc5, glibc, and uClibc.
 -Erik

include/busybox.h

@@ -26,19 +26,10 @@
 
 #include "Config.h"
 
-#include <stdlib.h>
+#include <stdio.h>
 #include <stdarg.h>
-#include <string.h>
-#include <unistd.h>
-#include <errno.h>
 #include <sys/stat.h>
-#include <sys/param.h>
 #include <sys/types.h>
-#include <mntent.h>
-#include <regex.h>
-/* for the _syscall() macros */
-#include <sys/syscall.h>
-#include <linux/unistd.h>
 
 #ifdef DMALLOC
 #include "dmalloc.h"
@@ -69,26 +60,6 @@ static inline int is_octal(ch)   { return ((ch >= '0') && (ch <= '7')); }
 #endif
 
 
-/* I don't like nested includes, but the string and io functions are used
- * too often
- */
-#include <stdio.h>
-#if !defined(NO_STRING_H) || defined(STDC_HEADERS)
-#  include <string.h>
-#  if !defined(STDC_HEADERS) && !defined(NO_MEMORY_H) && !defined(__GNUC__)
-#    include <memory.h>
-#  endif
-#  define memzero(s, n)     memset ((void *)(s), 0, (n))
-#else
-#  include <strings.h>
-#  define strchr            index
-#  define strrchr           rindex
-#  define memcpy(d, s, n)   bcopy((s), (d), (n))
-#  define memcmp(s1, s2, n) bcmp((s1), (s2), (n))
-#  define memzero(s, n)     bzero((s), (n))
-#endif
-
-
 enum Location {
 	_BB_DIR_ROOT = 0,
 	_BB_DIR_BIN,
@@ -179,7 +150,6 @@ extern void print_file(FILE *file);
 extern int print_file_by_name(char *filename);
 extern char process_escape_sequence(char **ptr);
 extern char *get_last_path_component(char *path);
-extern void xregcomp(regex_t *preg, const char *regex, int cflags);
 extern FILE *wfopen(const char *path, const char *mode);
 extern FILE *xfopen(const char *path, const char *mode);
 

include/grp.h

@@ -5,16 +5,6 @@
 #include <grp.h>
 #else
 
-#define bb_setgrent setgrent
-#define bb_endgrent endgrent
-#define bb_getgrent getgrent
-#define bb_getgrgid getgrgid
-#define bb_getgrnam getgrnam
-#define bb_fgetgrent fgetgrent
-#define bb_setgroups setgroups
-#define bb_initgroups initgroups
-#define __bb_getgrent __getgrent
-
 #include <sys/types.h>
 #include <features.h>
 #include <stdio.h>
@@ -28,19 +18,19 @@ struct group
   char **gr_mem;		/* Member list.	*/
 };
 
-extern void bb_setgrent __P ((void));
-extern void bb_endgrent __P ((void));
-extern struct group * bb_getgrent __P ((void));
+extern void setgrent __P ((void));
+extern void endgrent __P ((void));
+extern struct group * getgrent __P ((void));
 
-extern struct group * bb_getgrgid __P ((__const gid_t gid));
-extern struct group * bb_getgrnam __P ((__const char * name));
+extern struct group * getgrgid __P ((__const gid_t gid));
+extern struct group * getgrnam __P ((__const char * name));
 
-extern struct group * bb_fgetgrent __P ((FILE * file));
+extern struct group * fgetgrent __P ((FILE * file));
 
-extern int bb_setgroups __P ((size_t n, __const gid_t * groups));
-extern int bb_initgroups __P ((__const char * user, gid_t gid));
+extern int setgroups __P ((size_t n, __const gid_t * groups));
+extern int initgroups __P ((__const char * user, gid_t gid));
 
-extern struct group * __bb_getgrent __P ((int grp_fd));
+extern struct group * __getgrent __P ((int grp_fd));
 
 #endif /* USE_SYSTEM_PWD_GRP */
 #endif /* __BB_GRP_H */

include/pwd.h

@@ -5,17 +5,6 @@
 #include <pwd.h>
 #else
 
-#define bb_setpwent setpwent
-#define bb_endpwent endpwent
-#define bb_getpwent getpwent
-#define bb_putpwent putpwent
-#define bb_getpw getpw
-#define bb_fgetpwent fgetpwent
-#define bb_getpwuid getpwuid
-#define bb_getpwnam getpwnam
-#define __bb_getpwent __bb_getpwent
-
-
 #include <sys/types.h>
 #include <features.h>
 #include <stdio.h>
@@ -32,19 +21,19 @@ struct passwd
   char *pw_shell;		/* Shell program.  */
 };
 
-extern void bb_setpwent __P ((void));
-extern void bb_endpwent __P ((void));
-extern struct passwd * bb_getpwent __P ((void));
+extern void setpwent __P ((void));
+extern void endpwent __P ((void));
+extern struct passwd * getpwent __P ((void));
 
-extern int bb_putpwent __P ((__const struct passwd * __p, FILE * __f));
-extern int bb_getpw __P ((uid_t uid, char *buf));
+extern int putpwent __P ((__const struct passwd * __p, FILE * __f));
+extern int getpw __P ((uid_t uid, char *buf));
 
-extern struct passwd * bb_fgetpwent __P ((FILE * file));
+extern struct passwd * fgetpwent __P ((FILE * file));
 
-extern struct passwd * bb_getpwuid __P ((__const uid_t));
-extern struct passwd * bb_getpwnam __P ((__const char *));
+extern struct passwd * getpwuid __P ((__const uid_t));
+extern struct passwd * getpwnam __P ((__const char *));
 
-extern struct passwd * __bb_getpwent __P ((__const int passwd_fd));
+extern struct passwd * __getpwent __P ((__const int passwd_fd));
 
 #endif /* USE_SYSTEM_PWD_GRP */
 #endif /* __BB_PWD_H  */