Remove a few extra trailing backslashes

Remove a few extra trailing backslashes

In a few different places, moving libutil before libafshcrypto_lwp
caused a variable definition to have a trailing \ on the last line of
the definition. This can confuse make (at least, the HP-UX make) to
think the next following definition is also part of the current
definition. Remove the trailing "\"s.

Change-Id: I235f95813e303bc3805b5d9fc8d7861e812613e2
Reviewed-on: http://gerrit.openafs.org/5523
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>