[Openais] scale/redundant ring part 2

[Steven Dake]

Here is 2nd patch of the scalability/redundant ring patch stream.

This patch _changes_ the configuration file format to support specifying
multiple interfaces.  Each interface has a separately configured
multicast address and port (which can be the same for both rings if
desired).  Please have a look at conf/openais.conf to see the new format
for specifying redundant ring operation.  The man pages have also been
slightly updated.

The new format looks is shown below and takes advantage of Patrick's new
parser code.

totem {
        version: 2
        secauth: off
        netmtu: 8900
        threads: 0
        interface {
                ringnumber: 0
                bindnetaddr: 192.168.2.0
                mcastaddr: 226.94.1.1
                mcastport: 5405
        }
        interface {
                ringnumber: 1
                bindnetaddr: 192.168.3.0
                mcastaddr: 226.94.1.1
                mcastport: 5405
        }
}

Regards
-steve