Windows: Parse Freelance entries and enforce trailing dot but no trailing ws

Windows: Parse Freelance entries and enforce trailing dot but no trailing ws

Make sure that there is a trailing dot and no trailing whitespace
for both Mount Point and Symlink entries read from the Freelance
registry key.

LICENSE MIT

Change-Id: I339d1bd2a8fc3e5f44362c65e872396adf64fdf6
Reviewed-on: http://gerrit.openafs.org/2555
Tested-by: Jeffrey Altman <jaltman@openafs.org>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Reviewed-by: Jeffrey Altman <jaltman@openafs.org>