Request for approval: 7152519, 7159041, 7153343 Remove including of non-POSIX header link.h

[Jonathan Lu]

Hi all,

Here's a request of porting the fix 7152519, 7159041, 7153343 to JDK7, 
could you please help to review?

All the three patches serves for the same purpose of removing including 
of non-POSIX header link.h, so I suggest to contribute them in one commit.

Webrev:
http://cr.openjdk.java.net/~luchsh/rm_link_h/

Bugs:
http://bugs.sun.com/view_bug.do?bug_id=7152519
http://bugs.sun.com/view_bug.do?bug_id=7159041
http://bugs.sun.com/view_bug.do?bug_id=7153343

Thread where they were reviewed,
http://mail.openjdk.java.net/pipermail/2d-dev/2012-March/002410.html

Thanks a lot,
Jonathan