Fix prototypes for getdents, read, readlink

lib/libc/sys-minix/getdents.c

@@ -4,10 +4,7 @@
 
 #include <dirent.h>
 
-ssize_t getdents(fd, buffer, nbytes)
-int fd;
-char *buffer;
-size_t nbytes;
+ssize_t getdents(int fd, char *buffer, size_t nbytes)
 {
   message m;
 

lib/libc/sys-minix/read.c

@@ -8,10 +8,7 @@
 __weak_alias(read, _read)
 #endif
 
-ssize_t read(fd, buffer, nbytes)
-int fd;
-void *buffer;
-size_t nbytes;
+ssize_t read(int fd, void *buffer, size_t nbytes)
 {
   message m;
 

lib/libc/sys-minix/readlink.c

@@ -9,7 +9,7 @@
 __weak_alias(readlink, _readlink)
 #endif
 
-int readlink(const char *name, char *buffer, size_t bufsiz)
+ssize_t readlink(const char *name, char *buffer, size_t bufsiz)
 {
   message m;
 

lib/libedit/editline.c

@@ -97,8 +97,6 @@ int		rl_meta_chars = 0;
 **  Declarations.
 */
 STATIC CHAR	*editinput();
-extern int	read();
-extern int	write();
 #if	defined(USE_TERMCAP)
 extern char	*tgetstr();
 extern int	tgetent();