Request for review: 7141739: [osx] Local attach fails if java.io.tmpdir is set

[Staffan Larsen]

Please review the following change.

webrev: http://cr.openjdk.java.net/~sla/7141739/webrev.00/
bug: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7141739

This is a followup of bug 7132199 which is fixed in jdk8 and jdk7u-dev.

If the user sets -Djava.io.tmpdir to something else than /tmp, the attach framework will fail (for example jstack). The reason is that Hotspot and the jdk does not agree on which directory the well-known .java_pid and .attach_pid files should be in. On OSX Hotspot will always create these in the per-user secure temporary directory, but the jdk will look in java.io.tmpdir.

This fix makes sure the jdk looks in the same location as Hotspot.

Thanks,
/Staffan