Move the closing of file descriptors from the destructor to
the finalize function. This allows threads waiting on poll to
wake up and release handle references.

BKrev: 42b097dceYknwQw6iUHoWmtoiZRCAQ


git-svn-id: http://svn.fedorahosted.org/svn/corosync/trunk@663 fd59a12c-fef9-0310-b244-a6a79926bd2f