ocfs2: add ext2 attributes

Support immutable, and other attributes.

Some renaming and other minor fixes done by myself.

Signed-off-by: Herbert Poetzl <herbert@13thfloor.at>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>

diff --cc fs/ocfs2/Makefile
Simple merge

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

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

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

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

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

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

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

diff --cc fs/ocfs2/ocfs2_fs.h
Simple merge