More cleanup. Added license blurb to top of all source files.

Remove all old $Id:$ and similar constructs, they don't provide any
additional benefit anymore.

Add configure options for toggling terminal bell and  toying with
SIGSTOP using Ctrl-Z.  Rename config option for ANSI keys to get
a consistent namespace.

Also did some work on ANSI-fication of function definitions, lot's
of that was still lingering around.

include/editline.h

@@ -1,4 +1,23 @@
-/* Minix editline */
+/* Minix editline
+ *
+ * Copyright (c) 1992, 1993  Simmule Turner and Rich Salz. All rights reserved.
+ *
+ * This software is not subject to any license of the American Telephone
+ * and Telegraph Company or of the Regents of the University of California.
+ *
+ * Permission is granted to anyone to use this software for any purpose on
+ * any computer system, and to alter it and redistribute it freely, subject
+ * to the following restrictions:
+ * 1. The authors are not responsible for the consequences of use of this
+ *    software, no matter how awful, even if they arise from flaws in it.
+ * 2. The origin of this software must not be misrepresented, either by
+ *    explicit claim or by omission.  Since few users ever read sources,
+ *    credits must appear in the documentation.
+ * 3. Altered versions must be plainly marked as such, and must not be
+ *    misrepresented as being the original software.  Since few users
+ *    ever read sources, credits must appear in the documentation.
+ * 4. This notice may not be removed or altered.
+ */
 #ifndef __EDITLINE_H__
 #define __EDITLINE_H__
 
@@ -10,9 +29,7 @@ extern int rl_meta_chars;
 extern char *(*rl_complete)(char *token, int *match);
 extern int (*rl_list_possib)(char *token, char ***av);
 
-/*
-**  For compatibility with FSF readline.
-*/
+/* For compatibility with FSF readline. */
 extern void rl_reset_terminal(char *p);
 extern void rl_initialize(void);