[Cluster-devel] GFS2 clean up patches

[swhiteho at redhat.com]

The following are a bunch of clean up patches for GFS2. In
combination they remove a couple of structures which are not
required from incore.h, merging the fields into the containing
structures. This completes the removal of two of the _host
structures which was one of the things promised during the original
merge/review process.

Also the final patch adds some further information to the debugfs
file through which the glock state can be read to aid debugging.

Signed-off-by: Steven Whitehouse <swhiteho at redhat.com>