Windows: fix UNICODE build for talocale

Windows: fix UNICODE build for talocale

src/WINNT/talocale has not been built for UNICODE in a long time.
Fix it.

Reviewed-on: http://gerrit.openafs.org/3439
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Tested-by: Jeffrey Altman <jaltman@openafs.org>
Reviewed-by: Jeffrey Altman <jaltman@openafs.org>
(cherry picked from commit 24a9ba4b829a871defea75ddf17fb621035ca008)

Change-Id: I2f77de3255b229bfa00437af59d11c0da5646458
Reviewed-on: http://gerrit.openafs.org/3787
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementia.org>