Updated openstack/openstack
Project: openstack/swift  4acce68e3368bb861c423e559ee4f106518c8106

Make the new xprofile tests optional.

On Lucid at least, xprofile doesn't work. While others try to figure out the
underlying issue, this patch would just skip the tests if the profiling code
can not be imported.

Change-Id: I0fee3f729742cc727edc2adabb4ed782bea7798f