xfs: Add pquota fields where gquota is used.

Add project quota changes to all the places where group quota field
is used:
   * add separate project quota members into various structures
   * split project quota and group quotas so that instead of overriding
     the group quota members incore, the new project quota members are
     used instead
   * get rid of usage of the OQUOTA flag incore, in favor of separate
     group and project quota flags.
   * add a project dquot argument to various functions.

Not using the pquotino field from superblock yet.

Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Reviewed-by: Ben Myers <bpm@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>

diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c
index 8865261..96dda62 100644
--- a/fs/xfs/xfs_iops.c
+++ b/fs/xfs/xfs_iops.c
@@ -539,7 +539,7 @@
 		ASSERT(udqp == NULL);
 		ASSERT(gdqp == NULL);
 		error = xfs_qm_vop_dqalloc(ip, uid, gid, xfs_get_projid(ip),
-					 qflags, &udqp, &gdqp);
+					 qflags, &udqp, &gdqp, NULL);
 		if (error)
 			return error;
 	}
@@ -575,7 +575,7 @@
 		     (XFS_IS_GQUOTA_ON(mp) && igid != gid))) {
 			ASSERT(tp);
 			error = xfs_qm_vop_chown_reserve(tp, ip, udqp, gdqp,
-						capable(CAP_FOWNER) ?
+						NULL, capable(CAP_FOWNER) ?
 						XFS_QMOPT_FORCE_RES : 0);
 			if (error)	/* out of quota */
 				goto out_trans_cancel;