* Makefile.in (TREE_H): Add tree-check.h.
	(tree-check.h, gencheck): New targets.
	* gencheck.c: New file.
	* tree.c (tree_check, tree_class_check): New functions.
	* tree.h (TREE_CHECK, TREE_CLASS_CHECK): Define.
	(TYPE_CHECK, DECL_CHECK): Define.
	Modify all access macros to use generated checking macros.

From-SVN: r19934