langhooks.h (estimate_num_insns, [...]): Remove hooks.

	* langhooks.h (estimate_num_insns, pushlevel, poplevel, set_block,
	maybe_build_cleanup, update_decl_after_saving): Remove hooks.
	* langhooks.c (lhd_clear_binding_stack): Remove.
	* langhooks-def.h (lhd_clear_binding_stack,
	LANG_HOOKS_MAYBE_BUILD_CLEANUP,
	LANG_HOOKS_UPDATE_DECL_AFTER_SAVING,
	LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS, LANG_HOOKS_PUSHLEVEL,
	LANG_HOOKS_POPLEVEL, LANG_HOOKS_SET_BLOCK): Remove.
	(LANG_HOOKS_CLEAR_BINDING_STACK): Define to lhd_do_nothing.
	* system.h (LANG_HOOKS_TREE_INLINING_ESTIMATE_NUM_INSNS,
	LANG_HOOKS_PUSHLEVEL, LANG_HOOKS_SET_BLOCK,
	LANG_HOOKS_MAYBE_BUILD_CLEANUP,
	LANG_HOOKS_UPDATE_DECL_AFTER_SAVING, LANG_HOOKS_POPLEVEL): Poison.
	* tree.h (poplevel): Don't declare.
	* c-lang.c (LANG_HOOKS_CLEAR_BINDING_STACK, LANG_HOOKS_PUSHLEVEL,
	LANG_HOOKS_POPLEVEL, LANG_HOOKS_SET_BLOCK): Remove.
	* objc/objc-lang.c (LANG_HOOKS_CLEAR_BINDING_STACK,
	LANG_HOOKS_PUSHLEVEL, LANG_HOOKS_POPLEVEL, LANG_HOOKS_SET_BLOCK):
	Remove.

ada:
	* misc.c (LANG_HOOKS_CLEAR_BINDING_STACK, LANG_HOOKS_PUSHLEVEL,
	LANG_HOOKS_POPLEVEL, LANG_HOOKS_SET_BLOCK): Remove.

cp:
	* cp-lang.c (LANG_HOOKS_MAYBE_BUILD_CLEANUP, LANG_HOOKS_PUSHLEVEL,
	LANG_HOOKS_POPLEVEL, LANG_HOOKS_UPDATE_DECL_AFTER_SAVING): Remove.
	* cp-tree.h (poplevel): Declare.
	(set_block): Remove.
	* decl.c (set_block): Remove.

fortran:
	* f95-lang.c (set_block): Remove.
	(gfc_clear_binding_stack): New.
	(LANG_HOOKS_CLEAR_BINDING_STACK): Define.
	(struct binding_level): Remove block_created_by_back_end.
	(clear_binding_level): Likewise.
	(poplevel): Don't handle block_created_by_back_end.

java:
	* java-tree.h (set_block): Remove.
	* lang.c (java_clear_binding_stack): New.
	(LANG_HOOKS_CLEAR_BINDING_STACK): Define.
	* decl.c (struct binding_level): Remove this_block.
	(clear_binding_level): Likewise.
	(poplevel): Don't handle this_block.
	(set_block): Remove.

treelang:
	* treetree.c (set_block): Remove.
	(struct binding_level): Remove block_created_by_back_end.
	(clear_binding_level): Likewise.
	(tree_code_create_function_initial,
	tree_code_create_function_wrapup): Call pushlevel and poplevel
	directly rather than through hooks.
	(poplevel): Don't handle block_created_by_back_end.

From-SVN: r84499