LU-1782 quota: ignore sb_has_quota_active() in OFED's header

LU-1782 quota: ignore sb_has_quota_active() in OFED's header

sb_has_quota_active() and sb_any_quota_active() are defined
in ofed's backport headers, but if these are reffered on
RHEL5's kernel, quota is broken. So, it ignores them.

port of b1_8 patch df3a5407df2c21da2c43c8acc3624a93303c8856

Signed-off-by: Shuichi Ihara <sihara@ddn.com>
Signed-off-by: Liu Ying <emoly.liu@intel.com>
Change-Id: I608a45b86164fd42086a1e8e5fdc63071c3a17a8
Reviewed-on: http://review.whamcloud.com/4704
Reviewed-by: Niu Yawei <niu@whamcloud.com>
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>