Changes to 'io_timeout4'

[David Teigland]

New branch 'io_timeout4' available with the following commits:
commit 4e6e204bf29b63a17bfa421c377bf7003287198a
Author: David Teigland <teigland(a)redhat.com&gt;
Date:   Mon Jul 23 08:58:57 2012 -0500

    sanlock: adjustable io timeouts
    
    New sanlock_add_lockspace_timeout() api to allow
    the timeout to be specified per lockspace.
    
    Also correctly handle nodes that may be using
    different timeouts in the same lockspace.
    
    Signed-off-by: David Teigland <teigland(a)redhat.com&gt;