* libmisc/console.c, libmisc/motd.c, libmisc/setupenv.c,

libmisc/sulog.c, libmisc/hushed.c, libmisc/failure.c,
	libmisc/loginprompt.c, libmisc/ttytype.c,
	libmisc/pam_pass_non_interractive.c, src/userdel.c, src/login.c,
	lib/commonio.c, lib/commonio.h: Fix some const issues.
	* libmisc/motd.c: Avoid multi-statements lines.
	* libmisc/motd.c: Support long MOTD_FILE.
	* libmisc/list.c, lib/prototypes.h: Revert previous change.
	dup_list and is_on_list are used with members as defined for the
	group structure, and thus even if the list is not modified, the
	list elements cannot be constant strings.
	* libmisc/system.c: Avoid C++ comments.
	* src/vipw.c: WITH_TCB cannot be tested inside a gettextized
	string. Split the Usage string.
	* lib/commonio.h: Re-indent.

libmisc/system.c

@@ -60,9 +60,9 @@ int safe_system (const char *command,
 
 	fd = open ("/dev/null", O_RDWR);
 	/* Child */
-	dup2 (fd, 0);	// Close Stdin
+	dup2 (fd, 0);           /* Close Stdin */
 	if (ignore_stderr) {
-		dup2 (fd, 2);	// Close Stderr
+		dup2 (fd, 2);   /* Close Stderr */
 	}
 
 	execve (command, (char *const *) argv, (char *const *) env);