Code review request: 7101658 : Backout 7082769 changes

[Seán Coffey]

bug ID : http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7101658
(bug report not visible yet)

changes for 7082769 fix have led to behavioral changes which can lead to 
native file descriptor exhaustion. Basically - file descriptors are not 
released until all streams referencing them are closed.

For the short term, we should backout the 7082769 changes until a full 
solution which doesn't cause issue in terms of compatibility is found.

I'm hoping to get this change into 7u2.

webrev : http://cr.openjdk.java.net/~coffeys/webrev.7101658/

regards,
Sean.