make to work on sun, added copyright, etc

lang/m2/comp/input.c

@@ -1,5 +1,14 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ *
+ * Author: Ceriel J.H. Jacobs
+ */
+
 /* I N S T A N T I A T I O N   O F   I N P U T   P A C K A G E */
 
+/* $Header$ */
+
 #include	"f_info.h"
 struct f_info	file_info;
 #include	"input.h"