maint: use modules/tempname.diff file, not a replacement; update gnulib

Using a .diff is much more maintainable.  Otherwise, changes in
the gnulib module description file may not be noticed and merged
promptly and may even result in subtle errors.  Luckily, this time,
the failure to propagate gnulib's changes to modules/tempname resulted
only in an obvious link failure.
* gl/modules/tempname: Remove file.
* gl/modules/tempname.diff: Use a .diff file instead.
* gnulib: Update submodule to latest.

gl/modules/tempname

@@ -1,30 +0,0 @@
-Description:
-gen_tempname, gen_tempname_len: create a private temporary file or directory.
-
-Files:
-lib/tempname.c
-lib/tempname.h
-m4/tempname.m4
-
-Depends-on:
-extensions
-gettimeofday
-randint
-stdbool
-stdint
-sys_stat
-sys_time
-
-configure.ac:
-gl_FUNC_GEN_TEMPNAME
-
-Makefile.am:
-
-Include:
-"tempname.h"
-
-License:
-LGPL
-
-Maintainer:
-Eric Blake and Jim Meyering

gl/modules/tempname.diff

@@ -0,0 +1,18 @@
+--- /gnulib/modules/tempname	2011-06-17 11:41:46.070787376 +0200
++++ gl/modules/tempname	2011-06-17 11:43:49.571154551 +0200
+@@ -1,2 +1,2 @@
+ Description:
+-gen_tempname() function: create a private temporary file or directory.
++gen_tempname, gen_tempname_len: create a private temporary file or directory.
+
+ Files:
+ lib/tempname.c
+@@ -10,6 +10,8 @@ Depends-on:
+ extensions
+ gettimeofday
+ lstat
++randint
++stdbool
+ stdint
+ sys_stat
+ sys_time

gnulib

@@ -1 +1 @@
-Subproject commit a203d01a877e80e8a07147d892ec89a63498f7ff
+Subproject commit 6eedb6a104486c2df4384195e5dfc487d97c5beb