ocfs2: clean up some osb fields

Get rid of osb->uuid, osb->proc_sub_dir, and osb->osb_id. Those fields were
unused, or could easily be removed. As a result, we also no longer need
MAX_OSB_ID or ocfs2_globals_lock.

Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>

diff --cc fs/ocfs2/dlmglue.c
Simple merge

diff --cc fs/ocfs2/journal.c
Simple merge

diff --cc fs/ocfs2/ocfs2.h
Simple merge

diff --cc fs/ocfs2/super.c
Simple merge