* attribs.c (c_common_attribute_table): Move table and handlers
	to c-common.c.
	(format_attribute_table, lang_attribute_table,
	lang_attribute_common): Remove.
	(init_attributes): Replace NULL pointers with pointers to the
	empty table.
	(handle_packed_attribute, handle_nocommon_attribute,
	handle_common_attribute, handle_noreturn_attribute,
	handle_noinline_attribute, handle_always_inline_attribute,
	handle_used_attribute, handle_unused_attribute,
	handle_const_attribute, handle_transparent_union_attribute,
	handle_constructor_attribute, handle_destructor_attribute,
	handle_mode_attribute, handle_section_attribute,
	handle_aligned_attribute, handle_weak_attribute,
	handle_alias_attribute, handle_visibility_attribute,
	handle_no_instrument_function_attribute, handle_malloc_attribute,
	handle_no_limit_stack_attribute, handle_pure_attribute,
	handle_deprecated_attribute, handle_vector_size_attribute,
	vector_size_helper): Move to c-common.c.
	* c-common.c (c_common_attribute_table,
	handle_packed_attribute, handle_nocommon_attribute,
	handle_common_attribute, handle_noreturn_attribute,
	handle_noinline_attribute, handle_always_inline_attribute,
	handle_used_attribute, handle_unused_attribute,
	handle_const_attribute, handle_transparent_union_attribute,
	handle_constructor_attribute, handle_destructor_attribute,
	handle_mode_attribute, handle_section_attribute,
	handle_aligned_attribute, handle_weak_attribute,
	handle_alias_attribute, handle_visibility_attribute,
	handle_no_instrument_function_attribute, handle_malloc_attribute,
	handle_no_limit_stack_attribute, handle_pure_attribute,
	handle_deprecated_attribute, handle_vector_size_attribute,
	vector_size_helper): Move from attribs.c.
	* c-common.h (c_common_attribute_table,
	c_common_format_attribute_table): New.
	* c-lang.c (LANG_HOOKS_COMMON_ATTRIBUTE_TABLE,
	LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE): Redefine.
	* langhooks-def.h (LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE,
	LANG_HOOKS_COMMON_ATTRIBUTE_TABLE, LANG_HOOKS_ATTRIBUTE_TABLE): New.
	(LANG_HOOKS_INITIALIZER): Update.
	* langhooks.h (struct lang_hooks): 3 new attribute hooks.
	* target-def.h (TARGET_ATTRIBUTE_TABLE): Default to NULL.
	* target.h: Update comment.
	* tree.c (default_target_attribute_table): Remove.
	* tree.h (default_target_attribute_table, format_attribute_table,
	lang_attribute_table, lang_attribute_common): Remove.
ada:
	* misc.c (gnat_init): Don't set lang_attribute_common.
cp:
	* cp-lang.c (LANG_HOOKS_COMMON_ATTRIBUTE_TABLE,
	LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE, LANG_HOOKS_ATTRIBUTE_TABLE):
	Redefine.
	* cp-tree.h (cp_attribute_table): Rename.
	* decl.c (lang_attribute_table): Remove declaration.
	(cxx_init_decl_processing): Don't set it.
	* tree.c (cp_attribute_table): Rename.
objc:
	* objc-lang.c (LANG_HOOKS_COMMON_ATTRIBUTE_TABLE,
	LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE): Redefine.

From-SVN: r52730