client: vxattr support for rstat

copy the kernel client code (which uses table to present vxattrs)

Signed-off-by: Yan, Zheng <zyan@redhat.com>
Merge pull request #2373 from ceph/wip-9026

client: vxattr support for stat

Reviewed-by: Greg Farnum <greg@inktank.com>
FileStore: Remove unused code.

Signed-off-by: Ma Jianpeng <jianpeng.ma@intel.com>
Merge pull request #2392 from majianpeng/fix1

FileStore: Remove unused code.

Reviewed-by: Loic Dachary <loic@dachary.org>
attempt to get the ayni JS into all head tags

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
fix missing bracket

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>