c-common.c (pointer_int_sum): Do not complain about using pointers to pointers-to-members.

	* c-common.c (pointer_int_sum): Do not complain about using
	pointers to pointers-to-members.

	* call.c (build_conditional_expr): Do not call force_rvalue for
	operands of void_type when the conditional expression itself has
	void type.
	* name-lookup.c (pushdecl): Don't consider a declaration of a
	function named "main" to be an overload of a type named "main".
	* parser.c (cp_parser_template_name): Perform name lookup when the
	template name is proceeded by "template" if the qualifying scope
	is non-dependent.
	* typeck.c (composite_pointer_type_r): Correctly handle
	pointer-to-member types.
	(build_const_cast): Likewise.

	* g++.dg/expr/cond5.C: New test.
	* g++.dg/expr/constcast1.C: Likewise.
	* g++.dg/expr/ptrmem2.C: Likewise.
	* g++.dg/expr/ptrmem3.C: Likewise.
	* g++.dg/lookup/main1.C: Likewise.
	* g++.dg/template/lookup6.C: Likewise.

From-SVN: r79663