rename funcs and structs to btrfs

Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/debug-tree.c b/fs/btrfs/debug-tree.c
index 21f607d..6da0a7a 100644
--- a/fs/btrfs/debug-tree.c
+++ b/fs/btrfs/debug-tree.c
@@ -7,13 +7,13 @@
 #include "print-tree.h"
 
 int main(int ac, char **av) {
-	struct ctree_super_block super;
-	struct ctree_root *root;
+	struct btrfs_super_block super;
+	struct btrfs_root *root;
 	radix_tree_init();
 	root = open_ctree("dbfile", &super);
 	printf("root tree\n");
-	print_tree(root, root->node);
+	btrfs_print_tree(root, root->node);
 	printf("map tree\n");
-	print_tree(root->extent_root, root->extent_root->node);
+	btrfs_print_tree(root->extent_root, root->extent_root->node);
 	return 0;
 }