LU-84 Allow building against kernel devel headers with quotas

LU-84 Allow building against kernel devel headers with quotas

The quota format definitions are normally found in private kernel
headers.  However, some sites build Lustre against kernel development
headers rather than than full kernel source. To accomodate this we add
the minimal set of required definitions to
lustre/include/lustre_quota.h which will take effect only if
quotaio_v*.h are not located at configure time.  The upstream version
of the 64-bit quota format patch in RHEL6 adds QFMT_VFS_V1 to
include/linux/quota.h, so configure can check for that if the
quotaio_v*.h headers aren't found.

Signed-off-by: Ned Bass <bass6@llnl.gov>
Change-Id: Id627f21604f1e35f550adb972c7f0e0ca9edf115
Reviewed-on: http://review.whamcloud.com/295
Tested-by: Hudson
Reviewed-by: Oleg Drokin <green@whamcloud.com>
Reviewed-by: Bobi Jam <bobijam@whamcloud.com>
Reviewed-by: Johann Lombardi <johann@whamcloud.com>