ubik: Replay the transaction log label correctly

ubik: Replay the transaction log label correctly

Commit eec0d94f519b3e27f255b9b7a637df043951424e fixed the transaction
replay log code to correctly identify valid transaction logs on
little-endian systems, but missed ntohl'ing the database label read in
a LOGEND opcode. Fix that, so the database is labelled correctly when
replayed from a transaction log.

And while we're here, actually pass a struct ubik_version* to
adbase->setlabel, to make it a little more clear what's happening.

Reviewed-on: http://gerrit.openafs.org/3384
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementia.org>
(cherry picked from commit 1e8598b334b4354a3998b1e5fe189f3f33957048)

Change-Id: I832eff8641c339a103170f50238bbb669412bda0
Reviewed-on: http://gerrit.openafs.org/5752
Reviewed-by: Derrick Brashear <shadow@dementix.org>
Tested-by: Derrick Brashear <shadow@dementix.org>