Code review request: 7082769: FileInputStream/FileOutputStream/RandomAccessFile allow file descriptor be closed when still in use

[Seán Coffey]

http://bugs.sun.com/view_bug.do?bug_id=7082769

webrev : http://cr.openjdk.java.net/~coffeys/webrev.7082769.7087019.jdk8/

Bug fix where we ensure that the fd object is not disposed of until all 
streams are closed out.

Testcase is a bulked up version of CR 6322678 (which wasn't committed  
at time of 6322678 fix). It includes create/close() calls for 
FileInputStream/FileOutputStream/RandomAccessFile which all reference 
the same file descriptor. Multi threaded access to the same file 
descriptor is also tested.

Typo fix also as per http://bugs.sun.com/view_bug.do?bug_id=7087019 also 
included.

regards,
Sean.