xstat: cope with different size timeval structures

xstat: cope with different size timeval structures

In xstat_fs_test and afsmonitor, try to display the xstat data
from the fileserver even if the fileserver has differently sized
timeval structures, or different word ordering, as the xstat
client program.

Reviewed-on: http://gerrit.openafs.org/2986
Tested-by: Derrick Brashear <shadow@dementia.org>
Reviewed-by: Derrick Brashear <shadow@dementia.org>
(cherry picked from commit c0a55111d726b26d07661957a65e4d59f155d5e6)

Change-Id: I3bef968538c90d6e261142c60a817b4b9e2ad228
Reviewed-on: http://gerrit.openafs.org/4791
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Tested-by: Derrick Brashear <shadow@dementia.org>