* Make-lang.in (JAVA_SRCS): Include java-tree.h.
	* Makefile.in (parse.o): Depend on ggc.h.
	(class.o): Likewise.
	(constants.o): Likewise.
	(decl.o): Likewise.
	(expr.o): Likewise.
	(jcf-parse.o): Likewise.
	(jcf-write.o): Likewise.
	(mangle.o): Likewise.
	* class.c: Include ggc.h.
	(build_static_field_ref): Register GC roots.
	(layout_class): Likewise.
	(init_class_processing): Likewise.
	* constants.c: Include ggc.h.
	(current_constant_pool_data_ref): Remove.
	(tag_nodes): Move it to ...
	(get_tag_node): ... here.  Register GC roots.
	* decl.c: Include ggc.h.  Remove many global tree definitions.
	(throw_node): Define.
	(java_global_trees): Likewise.
	(predef_filenames): Make the size a constant.
	(init_decl_processing): Adjust accordingly.
	(init_decl_processing): Call init_jcf_parse.  Register GC roots.
	* expr.c: Include ggc.h.
	(init_expr_processing): Register GC roots.
	(build_invokeinterface): Likewise.
	* java-tree.h: Replace extern tree declarations with macros.
	(java_global_trees): New variable.
	(java_tree_index): New enumeration.
	(init_jcf_parse): Declare.
	* jcf-parse.c: Include ggc.h.
	(current_class): Remove declaration.
	(main_class): Likewise.
	(all_class_list): Likewise.
	(predefined_filename_p): Adjust for constant size of
	predef_filenames.
	(init_jcf_parse): New function.
	* jcf-write.c: Include ggc.h.
	(generate_classfile): Register GC roots.
	(append_synthetic_attribute): Likewise.
	(append_innerclass_attribute_entry): Likewise.
	* lang.c: Include ggc.h.
	(lang_print_error): Register GC roots.
	* parse.h (struct parser_ctxt): Rename fields to avoid conflicts
	with macros.
	* parse.y: Include ggc.h.
	(wfl_operator): Remove.
	(goal): Register GC roots.
	(java_pop_parser_context): Adjust for new field names.
	(java_parser_context_save_global): Likewse.
	(java_parser_context_restore_global): Likewise.
	(java_parser_context_suspend): Likewise.
	(java_parser_context_resume): Likewise.
	(verify_constructor_circularity): Register GC roots.
	(lookup_cl): Likewise.
	(java_reorder_fields): Likewise.
	(build_current_this): Likewise.
	(class_in_current_package): Likewise.
	(argument_types_convertible): Likewise.
	(patch_cast): Rename wfl_op parameter to avoid macro conflicts.

From-SVN: r36581