[stackovf] recommend libsigsegv 2.6

[Eric Blake]

Now that libsigsegv 2.6 is released, and fixes a bug for several platforms 
where users reported a failure with my first pre-1.4.12 snapshot, we might as 
well recommend it.

>From a71cb2742cece958617b347b8db302aa0ea8cdcd Mon Sep 17 00:00:00 2001
From: Eric Blake <address@hidden>
Date: Mon, 25 Aug 2008 11:55:29 -0600
Subject: [PATCH] Update recommendation now that libsigsegv 2.6 is released.

* NEWS: Recommend libsigsegv 2.6+.
* README: Likewise.

Signed-off-by: Eric Blake <address@hidden>
---
 ChangeLog |    6 ++++++
 NEWS      |    5 +++--
 README    |    3 ++-
 3 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 44de879..ecf836d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2008-08-25  Eric Blake  <address@hidden>
+
+       Update recommendation now that libsigsegv 2.6 is released.
+       * NEWS: Recommend libsigsegv 2.6+.
+       * README: Likewise.
+
 2008-08-03  Eric Blake  <address@hidden>
 
        Increase ulimit stack value to be larger than SIGSTKSZ.
diff --git a/NEWS b/NEWS
index bfda4d4..6558a28 100644
--- a/NEWS
+++ b/NEWS
@@ -42,8 +42,9 @@ Foundation, Inc.
    systems that lack alternate stack support, such as Cygwin, and on
    systems that do not obey the POSIX semantics for distinguishing stack
    overflow from other exceptions, such as Linux, you can optionally
-   install the libsigsegv library to enhance m4's ability to accurately
-   report stack overflow: http://www.gnu.org/software/libsigsegv/
+   install the libsigsegv library (version 2.6 or newer recommended) to
+   enhance m4's ability to accurately report stack overflow:
+   http://www.gnu.org/software/libsigsegv/
 
 ** The `defn' builtin now warns when operating on an undefined macro name.
    To simulate 1.4.x behavior, use:
diff --git a/README b/README
index ea5061f..49aaa94 100644
--- a/README
+++ b/README
@@ -26,7 +26,8 @@ can use `./configure --with-libsigsegv-prefix=/path/to/dir', 
to make
 the build of `m4' use /path/to/dir/include/sigsegv.h as appropriate.
 The use of this library is optional; the only difference in having it
 available is that it increases the number of platforms where `m4' can
-correctly distinguish stack overflow from an internal bug.
+correctly distinguish stack overflow from an internal bug.  It is
+recommended that you use version 2.6 or newer.
 
 In the subdirectory `examples' you will find various m4 files, ranging
 from trivial test files to rather advanced macros.  If you intend to
-- 
1.6.0