Mark arguments to certain syscalls as being const

Mark arguments to certain system calls as being const where they should be but
aren't.  The list includes:

 (*) The filename arguments of various stat syscalls, execve(), various utimes
     syscalls and some mount syscalls.

 (*) The filename arguments of some syscall helpers relating to the above.

 (*) The buffer argument of various write syscalls.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/mn10300/kernel/process.c

@@ -268,7 +268,7 @@ asmlinkage long sys_vfork(void)
 		       0, NULL, NULL);
 }
 
-asmlinkage long sys_execve(char __user *name,
+asmlinkage long sys_execve(const char __user *name,
 			   char __user * __user *argv,
 			   char __user * __user *envp)
 {