_POSIX_PATH_MAX is 256, not 255

[Paul Eggert]

In 2001 or thereabouts POSIX changed _POSIX_PATH_MAX from 255 to 256.
So I installed this into coreutils.  This doesn't affect coreutils
on POSIX hosts, since they pick up _POSIX_PATH_MAX from the headers.

2005-05-29  Paul Eggert  <address@hidden>

        * lib/pathmax.h (_POSIX_PATH_MAX) [!defined _POSIX_PATH_MAX]:
        Define to 256, not 255, as per modern POSIX.
        * src/pathchk.c (_POSIX_PATH_MAX) [!defined _POSIX_PATH_MAX]:
        Likewise.

Index: lib/pathmax.h
===================================================================
RCS file: /fetish/cu/lib/pathmax.h,v
retrieving revision 1.10
diff -p -u -r1.10 pathmax.h
--- lib/pathmax.h       14 May 2005 07:58:06 -0000      1.10
+++ lib/pathmax.h       30 May 2005 05:43:28 -0000
@@ -1,5 +1,5 @@
 /* Define PATH_MAX somehow.  Requires sys/types.h.
-   Copyright (C) 1992, 1999, 2001, 2003 Free Software Foundation, Inc.
+   Copyright (C) 1992, 1999, 2001, 2003, 2005 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
@@ -30,7 +30,7 @@
 # endif
 
 # ifndef _POSIX_PATH_MAX
-#  define _POSIX_PATH_MAX 255
+#  define _POSIX_PATH_MAX 256
 # endif
 
 # if !defined PATH_MAX && defined _PC_PATH_MAX
Index: src/pathchk.c
===================================================================
RCS file: /fetish/cu/src/pathchk.c,v
retrieving revision 1.87
diff -p -u -r1.87 pathchk.c
--- src/pathchk.c       14 May 2005 07:58:37 -0000      1.87
+++ src/pathchk.c       30 May 2005 05:43:28 -0000
@@ -40,7 +40,7 @@
 #define AUTHORS "Paul Eggert", "David MacKenzie", "Jim Meyering"
 
 #ifndef _POSIX_PATH_MAX
-# define _POSIX_PATH_MAX 255
+# define _POSIX_PATH_MAX 256
 #endif
 #ifndef _POSIX_NAME_MAX
 # define _POSIX_NAME_MAX 14