Cache bypass: fix use of incorrect "states"

Cache bypass: fix use of incorrect "states"

Test and set the correct field for cache bypass flags.  There was
some confusion between cachingStates and the states associated with
vcache entries in a few places.

Reviewed-on: http://gerrit.openafs.org/3637
Reviewed-by: Matt Benjamin <matt@linuxbox.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Tested-by: Derrick Brashear <shadow@dementia.org>
(cherry picked from commit 8c541079573274d726180d3d9679c6a26cda84ea)

Change-Id: Ibaae9a766ef01cf4c68995c2bef454bae5d03b38
Reviewed-on: http://gerrit.openafs.org/3640
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementia.org>