fs: rename "rename2" i_op to "rename"

Generated patch:

sed -i "s/\.rename2\t/\.rename\t\t/" `git grep -wl rename2`
sed -i "s/\brename2\b/rename/g" `git grep -wl rename2`

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>

fs/nfs/nfs3proc.c

@@ -893,7 +893,7 @@ static const struct inode_operations nfs3_dir_inode_operations = {
 	.mkdir		= nfs_mkdir,
 	.rmdir		= nfs_rmdir,
 	.mknod		= nfs_mknod,
-	.rename2	= nfs_rename,
+	.rename		= nfs_rename,
 	.permission	= nfs_permission,
 	.getattr	= nfs_getattr,
 	.setattr	= nfs_setattr,

fs/nfs/nfs4proc.c

@@ -8937,7 +8937,7 @@ static const struct inode_operations nfs4_dir_inode_operations = {
 	.mkdir		= nfs_mkdir,
 	.rmdir		= nfs_rmdir,
 	.mknod		= nfs_mknod,
-	.rename2	= nfs_rename,
+	.rename		= nfs_rename,
 	.permission	= nfs_permission,
 	.getattr	= nfs_getattr,
 	.setattr	= nfs_setattr,

fs/nfs/proc.c

@@ -685,7 +685,7 @@ static const struct inode_operations nfs_dir_inode_operations = {
 	.mkdir		= nfs_mkdir,
 	.rmdir		= nfs_rmdir,
 	.mknod		= nfs_mknod,
-	.rename2	= nfs_rename,
+	.rename		= nfs_rename,
 	.permission	= nfs_permission,
 	.getattr	= nfs_getattr,
 	.setattr	= nfs_setattr,