ocfs2: Hook rest of the file system into dentry locking API

Actually replace the vote calls with the new dentry operations. Make any
necessary adjustments to get the scheme to work.

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

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

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

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

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