xstat: print collection values in debug mode

Print the values of the integers returned in the collection data
when the -debug option is given to xstat_fs_test and xstat_cm_test
test programs. This allows us to at least see what the unformatted
values are when there is a mismatch in timeval sizes between the
host and client (aka the 32/64 bit xstat bug). This change could
break scripts which call the xstat test programs with the debug
option. New debug output are prepended with 'debug:' to be
easily ignored.

Reviewed-on: http://gerrit.openafs.org/2878
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@openafs.org>
(cherry picked from commit 13aeb1dcaee5ad4e95477464860963788c5d1469)

Change-Id: Ief2f9346fad92e86aa2a214f1a462a10560c6e64
Reviewed-on: http://gerrit.openafs.org/9567
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Stephan Wiesand <stephan.wiesand@desy.de>
Tested-by: BuildBot <buildbot@rampaginggeek.com>