[Samba] samba 3.3.x vfs_acl_xattr support

[Ying Hu]

>From samba 3.3.0 release notes, it seems like samba 3.3.x is at least
experimenting using xattr to store NT ACL, which can eventually provide
better NT ACL support. I tried similar features with samba 4.0.0 alpha6,
which works very nice. Is there any plan to provide same level of NT ACL
support with samba 3.3.x? If there is such plan, any targeted date for that?
Thanks,
Ying