improved --help output

[Eric Blake]

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Per a new recommendation discussed among GNU maintainers, 'm4 --help' now
ends in:

Report bugs to <address@hidden>.
GNU M4 home page: http://www.gnu.org/software/m4/
General help using GNU software: http://www.gnu.org/gethelp/

- --
Don't work too hard, make some time for fun as well!

Eric Blake             address@hidden
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Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org

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>From d499df171ddb2161d1e75055009a9b3d18131591 Mon Sep 17 00:00:00 2001
From: Eric Blake <address@hidden>
Date: Sat, 24 Jan 2009 13:02:48 -0700
Subject: [PATCH] Add URLs to --help output.

* src/m4.c (usage): Use enhanced version-etc features.

Signed-off-by: Eric Blake <address@hidden>
---
 ChangeLog |    5 +++++
 src/m4.c  |    4 ++--
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 2a66325..c55e79f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2009-01-24  Eric Blake  <address@hidden>
+
+       Add URLs to --help output.
+       * src/m4.c (usage): Use enhanced version-etc features.
+
 2009-01-02  Eric Blake  <address@hidden>
 
        Use nicer email address in web manual.
diff --git a/src/m4.c b/src/m4.c
index 65b5092..914655a 100644
--- a/src/m4.c
+++ b/src/m4.c
@@ -1,7 +1,7 @@
 /* GNU m4 -- A simple macro processor
 
    Copyright (C) 1989, 1990, 1991, 1992, 1993, 1994, 2004, 2005, 2006,
-   2007, 2008 Free Software Foundation, Inc.
+   2007, 2008, 2009 Free Software Foundation, Inc.
 
    This file is part of GNU M4.
 
@@ -260,7 +260,7 @@ of directories included after any specified by `-I'.\n\
 Exit status is 0 for success, 1 for failure, 63 for frozen file version\n\
 mismatch, or whatever value was passed to the m4exit macro.\n\
 ", stdout);
-      xprintf ("\nReport bugs to <%s>.\n", PACKAGE_BUGREPORT);
+      emit_bug_reporting_address ();
     }
   exit (status);
 }
-- 
1.6.0.4