* gl/modules/tempname.diff: Regenerate to correct bogus offsets
and adjust for 1-line offset. Eric Blake reported that this
patch failed to apply when using patch-2.5.8.
Note that it applies fine using patch-2.6.1.
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.
