Windows: cm_RemoveSCacheFromHashTable scp not found

Windows: cm_RemoveSCacheFromHashTable scp not found

If the cm_scache_t has CM_SCACHEFLAG_INHASH flag set but cannot be
found in the CH_SCACHE_HASH(&scp->fid) hash chain then search the
entire hash table for the object.  At the end of the function we
will know that the CM_SCACHEFLAG_INHASH flag is safe to clear.

Change-Id: I92bfad98b7d3cdc42b5aa6b8fae24d47557465e7
Reviewed-on: http://gerrit.openafs.org/10352
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>