vfs_glusterfs: Log filename changes.

[Jeremy Allison]

On Tue, Dec 17, 2013 at 02:11:06PM -0500, Ira Cooper wrote:
> For a co-worker, Poornima:
> 
> Please push if you believe it is ok, if not, please provide feedback on
> what changes are needed.

LGTM. Pushed, with a minor change to check the
return from talloc_new() (probably one of those
"can't happen" things, but will keep coverity
quiet :-).

Jeremy.