xfs: replace xfs_sb_version checks with feature flag checks

Convert the xfs_sb_version_hasfoo() to checks against
mp->m_features. Checks of the superblock itself during disk
operations (e.g. in the read/write verifiers and the to/from disk
formatters) are not converted - they operate purely on the
superblock state. Everything else should use the mount features.

Large parts of this conversion were done with sed with commands like
this:

for f in `git grep -l xfs_sb_version_has fs/xfs/*.c`; do
	sed -i -e 's/xfs_sb_version_has\(.*\)(&\(.*\)->m_sb)/xfs_has_\1(\2)/' $f
done

With manual cleanups for things like "xfs_has_extflgbit" and other
little inconsistencies in naming.

The result is ia lot less typing to check features and an XFS binary
size reduced by a bit over 3kB:

$ size -t fs/xfs/built-in.a
	text	   data	    bss	    dec	    hex	filenam
before	1130866  311352     484 1442702  16038e (TOTALS)
after	1127727  311352     484 1439563  15f74b (TOTALS)

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
index e2d9955..86150e0 100644
--- a/fs/xfs/xfs_ioctl.c
+++ b/fs/xfs/xfs_ioctl.c
@@ -1213,7 +1213,7 @@ xfs_ioctl_setattr_xflags(
 
 	/* diflags2 only valid for v3 inodes. */
 	i_flags2 = xfs_flags2diflags2(ip, fa->fsx_xflags);
-	if (i_flags2 && !xfs_sb_version_has_v3inode(&mp->m_sb))
+	if (i_flags2 && !xfs_has_v3inodes(mp))
 		return -EINVAL;
 
 	ip->i_diflags = xfs_flags2diflags(ip, fa->fsx_xflags);
@@ -1362,9 +1362,9 @@ xfs_ioctl_setattr_check_projid(
 	if (!fa->fsx_valid)
 		return 0;
 
-	/* Disallow 32bit project ids if projid32bit feature is not enabled. */
+	/* Disallow 32bit project ids if 32bit IDs are not enabled. */
 	if (fa->fsx_projid > (uint16_t)-1 &&
-	    !xfs_sb_version_hasprojid32bit(&ip->i_mount->m_sb))
+	    !xfs_has_projid32(ip->i_mount))
 		return -EINVAL;
 	return 0;
 }
@@ -1467,7 +1467,7 @@ xfs_fileattr_set(
 	else
 		ip->i_extsize = 0;
 
-	if (xfs_sb_version_has_v3inode(&mp->m_sb)) {
+	if (xfs_has_v3inodes(mp)) {
 		if (ip->i_diflags2 & XFS_DIFLAG2_COWEXTSIZE)
 			ip->i_cowextsize = XFS_B_TO_FSB(mp, fa->fsx_cowextsize);
 		else