Restrictive file permissions: permissions removed also for owner on NTFS if Acl 
does not contain explicit entry for owner
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                 Key: DERBY-5492
                 URL: https://issues.apache.org/jira/browse/DERBY-5492
             Project: Derby
          Issue Type: Bug
          Components: Store
    Affects Versions: 10.9.0.0
            Reporter: Dag H. Wanvik


It turns out that the file owner does not necessarily get an explicit AclEntry; 
this depends on whether the created file has sufficient permissions already 
through, say, a permission for everybody to write. The present logic removes 
all AclEntries except those granted to the file's owner, erroneously presuming 
there would be such an entry always. This led to all AclEntries being removed. 


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