Windows: restructure daemon state tracking

Move all of the per thread state info into a struct and
allocate an array of structs instead of an array for each
data type.

Change-Id: I25b878192a8f919b21d96e981d7369a429b9171d
Reviewed-on: http://gerrit.openafs.org/8969
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
Tested-by: Jeffrey Altman <jaltman@your-file-system.com>