re PR c++/13975 (ICE on misplaced visibility specifier.)

re PR c++/13975 (ICE on misplaced visibility specifier.)

	PR c++/13975
	* tree.h (enum tree_index): Add TI_PUBLIC, TI_PROTECTED, and
	TI_PRIVATE.
	(access_public_node): Redefine.
	(access_protected_node): Likewise.
	(access_private_node): Likewise.
	* tree.c (build_common_tree_nodes): Create access_public_node,
	access_protected_node, and access_private_node.

	PR c++/13978
	* pt.c (build_non_dependent_expr): Do not build
	NON_DEPENDENT_EXPRs for FUNCTION_DECLs or TEMPLATE_DECLs.

	PR c++/13968
	* semantics.c (finish_id_expression): Do not return an
	IDENTIFIER_NODE when lookup finds a VAR_DECL.

	PR c++/13975
	* parser.c (cp_parser_simple_declaration): When skipping to the
	end of the statement swallow the terminating semicolon.

	PR c++/13978
	* g++.dg/template/koenig4.C: New test.

	PR c++/13968
	* g++.dg/template/crash17.C: New test.

	PR c++/13975
	* g++.dg/parse/error13.C: New test.
	* g++.old-deja/g++.robertl/eb125.C: Tweak error messages.

From-SVN: r77176