* include/tr1/tuple_iterate.h (tuple_size<tuple<> >::value): Provide
	definition.
	* include/tr1/functional (is_bind_expression<>::value,
	is_placeholder<>::value, + various partial specializations): Likewise.
	* include/tr1/array (tuple_size<array<> >::value): Likewise.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@118203 138bc75d-0d04-0410-961f-82ee72b054a4