Fix some stub prototypes missing ... after K&R conversion

ChangeLog

@@ -1,3 +1,9 @@
+2015-11-05  Roland McGrath  <roland@hack.frob.com>
+
+	* io/fcntl.c (__fcntl): Add ... to prototype.
+	* misc/ioctl.c (__ioctl): Likewise.
+	* misc/syscall.c (syscall): Likewise.
+
 2015-11-05  Joseph Myers  <joseph@codesourcery.com>
 
 	* scripts/list-fixed-bugs.py: New file.

io/fcntl.c

@@ -20,7 +20,7 @@
 
 /* Perform file control operations on FD.  */
 int
-__fcntl (int fd, int cmd)
+__fcntl (int fd, int cmd, ...)
 {
   if (fd < 0)
     {

misc/ioctl.c

@@ -21,7 +21,7 @@
 /* Perform the I/O control operation specified by REQUEST on FD.
    The actual type and use of ARG and the return value depend on REQUEST.  */
 int
-__ioctl (int fd, unsigned long int request)
+__ioctl (int fd, unsigned long int request, ...)
 {
   __set_errno (ENOSYS);
   return -1;

misc/syscall.c

@@ -23,7 +23,7 @@
    This only makes sense in certain operating systems.  */
 
 long int
-syscall (long int callno)
+syscall (long int callno, ...)
 {
   __set_errno (ENOSYS);
   return -1;