Windows: Apply MAX_FID_COUNT to AFS Redirector

Windows: Apply MAX_FID_COUNT to AFS Redirector

Provide consistency between the SMB path parser and the AFS
redirector path processing by using the same constant, MAX_FID_COUNT,
for both.  MAX_FID_COUNT is the maximum number of unique file ids
that can exist in a path after all mount points and symlinks have
been expanded.  The current value is 512.

Change-Id: Ife1a29ce7c064c986589bc9e2836899864da2f76
Reviewed-on: http://gerrit.openafs.org/7412
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>