Changes to 'hosts'

[David Teigland]

New branch 'hosts' available with the following commits:
commit f7cef65c2599243fa4285fad9eb42ab9a26cdb91
Author: David Teigland 
Date:   Tue Jun 11 12:22:19 2013 -0500

sanlock: improve check of max_hosts and num_hosts

Signed-off-by: David Teigland

commit 916d952ca75dfaf6f50535cbc0908af795febd1b
Author: David Teigland 
Date:   Tue Jun 4 12:27:55 2013 -0500

sanlock: add test_resource_owners

to test if a resource can be acquired.
    It correlates the results of sanlock_get_hosts
    and sanlock_read_resource_owners.

Signed-off-by: David Teigland

commit 73effa514f9e3f700bdc378eaae1f0bab3fe1ded
Author: David Teigland 
Date:   Mon Jun 3 12:03:35 2013 -0500

sanlock: add flag SANLK_REQUEST_NEXT_LVER

To cause sanlock_request() to automatically request
    the next lver so the caller does not need to specify
    the next lver, which requires reading the current one.
    This flag would produce unexpected/unwanted results
    if used by multiple hosts targetting the same owner.

Signed-off-by: David Teigland

commit 142e4f324457d711aae3fcf79e953cb122b93010
Author: David Teigland 
Date:   Thu May 30 17:31:31 2013 -0500

sanlock: add read_resource_owners

New api to read the resource owners from disk.

Signed-off-by: David Teigland

commit bbdb0824b799b15d2149a5af23413a28957b4ba1
Author: David Teigland 
Date:   Wed May 22 14:55:07 2013 -0500

sanlock: remove direct read_id and live_id

These have not been used and better alternatives now exist.

Signed-off-by: David Teigland

commit 90e97db3e0195e3add44a1f478d4e5435a4f91fb
Author: David Teigland 
Date:   Wed May 8 16:28:41 2013 -0500

sanlock: add get_hosts api

Returns info about hosts in a lockspace.

Use this to display host status from the
    command line: sanlock client gets -h 1

Signed-off-by: David Teigland