udf: remove some ugly macros

remove macros:
- UDF_SB_PARTMAPS
- UDF_SB_PARTTYPE
- UDF_SB_PARTROOT
- UDF_SB_PARTLEN
- UDF_SB_PARTVSN
- UDF_SB_PARTNUM
- UDF_SB_TYPESPAR
- UDF_SB_TYPEVIRT
- UDF_SB_PARTFUNC
- UDF_SB_PARTFLAGS
- UDF_SB_VOLIDENT
- UDF_SB_NUMPARTS
- UDF_SB_PARTITION
- UDF_SB_SESSION
- UDF_SB_ANCHOR
- UDF_SB_LASTBLOCK
- UDF_SB_LVIDBH
- UDF_SB_LVID
- UDF_SB_UMASK
- UDF_SB_GID
- UDF_SB_UID
- UDF_SB_RECORDTIME
- UDF_SB_SERIALNUM
- UDF_SB_UDFREV
- UDF_SB_FLAGS
- UDF_SB_VAT
- UDF_UPDATE_UDFREV
- UDF_SB_FREE
and open code them

convert UDF_SB_LVIDIU macro to udf_sb_lvidiu function

rename some struct udf_sb_info fields:
- s_volident to s_volume_ident
- s_lastblock to s_last_block
- s_lvidbh to s_lvid_bh
- s_recordtime to s_record_time
- s_serialnum to s_serial_number;
- s_vat to s_vat_inode;

Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Cc: Ben Fennema <bfennema@falcon.csc.calpoly.edu>
Cc: Jan Kara <jack@suse.cz>
Acked-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/udf/truncate.c b/fs/udf/truncate.c
index 7fc3912..6931f6b 100644
--- a/fs/udf/truncate.c
+++ b/fs/udf/truncate.c
@@ -163,7 +163,7 @@
 				cpu_to_le32(epos.offset -
 					    sizeof(struct allocExtDesc));
 			if (!UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_STRICT) ||
-			    UDF_SB_UDFREV(inode->i_sb) >= 0x0201)
+			    UDF_SB(inode->i_sb)->s_udfrev >= 0x0201)
 				udf_update_tag(epos.bh->b_data, epos.offset);
 			else
 				udf_update_tag(epos.bh->b_data,
@@ -184,6 +184,7 @@
 	uint32_t elen, nelen = 0, indirect_ext_len = 0, lenalloc;
 	int8_t etype;
 	struct super_block *sb = inode->i_sb;
+	struct udf_sb_info *sbi = UDF_SB(sb);
 	sector_t first_block = inode->i_size >> sb->s_blocksize_bits, offset;
 	loff_t byte_offset;
 	int adsize;
@@ -232,7 +233,7 @@
 						aed->lengthAllocDescs =
 						    cpu_to_le32(lenalloc);
 						if (!UDF_QUERY_FLAG(sb, UDF_FLAG_STRICT) ||
-						    UDF_SB_UDFREV(sb) >= 0x0201)
+						    sbi->s_udfrev >= 0x0201)
 							udf_update_tag(epos.bh->b_data,
 								       lenalloc +
 								       sizeof(struct allocExtDesc));
@@ -271,7 +272,7 @@
 				    (struct allocExtDesc *)(epos.bh->b_data);
 				aed->lengthAllocDescs = cpu_to_le32(lenalloc);
 				if (!UDF_QUERY_FLAG(sb, UDF_FLAG_STRICT) ||
-				    UDF_SB_UDFREV(sb) >= 0x0201)
+				    sbi->s_udfrev >= 0x0201)
 					udf_update_tag(epos.bh->b_data,
 						       lenalloc + sizeof(struct allocExtDesc));
 				else