Linux 3.9: hlist iterator change

hlist iterators have been reworked to not require a temporary
node parameter.

Change-Id: Ibea1295163bd39ff2901a2194aa46c3d342f5128
Reviewed-on: http://gerrit.openafs.org/9403
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>