guile-tools is a scheme script that loads scheme modules

* meta/guile-tools: Changed to be a scheme script. Instead of looking for
  executables in a "scripts dir", we just look for modules in (scripts),
  and load the modules directly.

* module/Makefile.am:
* module/scripts/: Move the scripts into module/ so they can be compiled.
  Rename scripts from `foo' to `foo.scm'.

* libguile/Makefile.am: Invoke the snarf->texi code via guile-tools.

* configure.in:
* .gitignore: Update for changes.

scripts/read-rfc822

@@ -1,133 +0,0 @@
-#!/bin/sh
-# aside from this initial boilerplate, this is actually -*- scheme -*- code
-main='(module-ref (resolve-module '\''(scripts read-rfc822)) '\'main')'
-exec ${GUILE-guile} -l $0 -c "(apply $main (cdr (command-line)))" "$@"
-!#
-;;; read-rfc822 --- Validate RFC822 file by displaying it to stdout
-
-;; 	Copyright (C) 2002, 2004, 2006 Free Software Foundation, Inc.
-;;
-;; This program is free software; you can redistribute it and/or
-;; modify it under the terms of the GNU General Public License as
-;; published by the Free Software Foundation; either version 2, or
-;; (at your option) any later version.
-;;
-;; This program is distributed in the hope that it will be useful,
-;; but WITHOUT ANY WARRANTY; without even the implied warranty of
-;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-;; General Public License for more details.
-;;
-;; You should have received a copy of the GNU General Public License
-;; along with this software; see the file COPYING.  If not, write to
-;; the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-;; Boston, MA 02110-1301 USA
-
-;;; Author: Thien-Thi Nguyen <ttn@gnu.org>
-
-;;; Commentary:
-
-;; Usage: read-rfc822 FILE
-;;
-;; Read FILE, assumed to be in RFC822 format, and display it to stdout.
-;; This is not very interesting, admittedly.
-;;
-;; For Scheme programming, this module exports two procs:
-;;   (read-rfc822 . args)               ; only first arg used
-;;   (read-rfc822-silently port)
-;;
-;; Parse FILE (a string) or PORT, respectively, and return a query proc that
-;; takes a symbol COMP, and returns the message component COMP.  Supported
-;; values for COMP (and the associated query return values) are:
-;;   from       -- #f (reserved for future mbox support)
-;;   headers    -- alist of (HEADER-SYMBOL . "VALUE-STRING") pairs, in order
-;;   body       -- rest of the mail message, a string
-;;   body-lines -- rest of the mail message, as a list of lines
-;; Any other query results in a "bad component" error.
-;;
-;; TODO: Add "-m" option (mbox support).
-
-;;; Code:
-
-(define-module (scripts read-rfc822)
-  :use-module (ice-9 regex)
-  :use-module (ice-9 rdelim)
-  :autoload (srfi srfi-13) (string-join)
-  :export (read-rfc822 read-rfc822-silently))
-
-(define from-line-rx   (make-regexp "^From "))
-(define header-name-rx (make-regexp "^([^:]+):[ \t]*"))
-(define header-cont-rx (make-regexp "^[ \t]+"))
-
-(define option #f)                      ; for future "-m"
-
-(define (drain-message port)
-  (let loop ((line (read-line port)) (acc '()))
-    (cond ((eof-object? line)
-           (reverse acc))
-          ((and option (regexp-exec from-line-rx line))
-           (for-each (lambda (c)
-                       (unread-char c port))
-                     (cons #\newline
-                           (reverse (string->list line))))
-           (reverse acc))
-          (else
-           (loop (read-line port) (cons line acc))))))
-
-(define (parse-message port)
-  (let* ((from (and option
-                    (match:suffix (regexp-exec from-line-rx
-                                               (read-line port)))))
-         (body-lines #f)
-         (body #f)
-         (headers '())
-         (add-header! (lambda (reversed-hlines)
-                        (let* ((hlines (reverse reversed-hlines))
-                               (first (car hlines))
-                               (m (regexp-exec header-name-rx first))
-                               (name (string->symbol (match:substring m 1)))
-                               (data (string-join
-                                      (cons (substring first (match:end m))
-                                            (cdr hlines))
-                                      " ")))
-                          (set! headers (acons name data headers))))))
-    ;; "From " is only one line
-    (let loop ((line (read-line port)) (current-header #f))
-      (cond ((string-null? line)
-             (and current-header (add-header! current-header))
-             (set! body-lines (drain-message port)))
-            ((regexp-exec header-cont-rx line)
-             => (lambda (m)
-                  (loop (read-line port)
-                        (cons (match:suffix m) current-header))))
-            (else
-             (and current-header (add-header! current-header))
-             (loop (read-line port) (list line)))))
-    (set! headers (reverse headers))
-    (lambda (component)
-      (case component
-        ((from) from)
-        ((body-lines) body-lines)
-        ((headers) headers)
-        ((body) (or body
-                    (begin (set! body (string-join body-lines "\n" 'suffix))
-                           body)))
-        (else (error "bad component:" component))))))
-
-(define (read-rfc822-silently port)
-  (parse-message port))
-
-(define (display-rfc822 parse)
-  (cond ((parse 'from) => (lambda (from) (format #t "From ~A\n" from))))
-  (for-each (lambda (header)
-              (format #t "~A: ~A\n" (car header) (cdr header)))
-            (parse 'headers))
-  (format #t "\n~A" (parse 'body)))
-
-(define (read-rfc822 . args)
-  (let ((parse (read-rfc822-silently (open-file (car args) OPEN_READ))))
-    (display-rfc822 parse))
-  #t)
-
-(define main read-rfc822)
-
-;;; read-rfc822 ends here