Windows: Wix cell names can be greater than 120 chars

Windows: Wix cell names can be greater than 120 chars

Increase the permitted length in the UI to 255 characters.

Reviewed-on: http://gerrit.openafs.org/6133
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>
(cherry picked from commit bf4f9f33dc55150d991d9eec4ea95d78208f6949)

Change-Id: Ibf24b85990a054e84724c52e481c19098fe5cbe0
Reviewed-on: http://gerrit.openafs.org/6810
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>