Review request: JDK-8014394 (fs) WatchService failing when watching \\server\$d

[Alexey Utkin]

  Bug description:
     https://jbs.oracle.com/bugs/browse/JDK-8014394
     http://bugs.sun.com/view_bug.do?bug_id=8014394

Here is the suggested fix:
http://cr.openjdk.java.net/~uta/openjdk-webrevs/JDK-8014394/webrev.00/

Summary:
The problem source is the ERROR_MORE_DATA warning event that was treated 
as error.
The suggested fix contains limited refactoring that can be critical for 
further support.

The main changes are:
-- The [WAKEUP_COMPLETION_KEY] constant was introduced  instead "magic" 
zero value.
-- The capacity of the completion key set was extended for x64 platform 
in accordance with MS documentation.
-- The [OVERLAPPED] structure is initialized correctly in native code.

I regret about  the absence of a common code with [sun.nio.ch] package 
that has similar problems.

Regards,
-uta