hashtable (_Hashtable<>): Add missing pointer and const_pointer typedefs.

hashtable (_Hashtable<>): Add missing pointer and const_pointer typedefs.

2008-08-27  Paolo Carlini  <paolo.carlini@oracle.com>

	* include/tr1_impl/hashtable (_Hashtable<>): Add missing pointer and
	const_pointer typedefs.
	* testsuite/tr1/6_containers/unordered_set/requirements/typedef.cc:
	Add.
	* testsuite/tr1/6_containers/unordered_map/requirements/typedef.cc:
	Likewise.
	* testsuite/tr1/6_containers/unordered_multiset/requirements/
	typedef.cc: Likewise.
	* testsuite/tr1/6_containers/unordered_multimap/requirements/
	typedef.cc: Likewise.
	* testsuite/23_containers/unordered_set/requirements/typedef.cc:
	Likewise.
	* testsuite/23_containers/unordered_map/requirements/typedef.cc:
	Likewise.
	* testsuite/23_containers/unordered_multiset/requirements/typedef.cc:
	Likewise.
	* testsuite/23_containers/unordered_multimap/requirements/typedef.cc:
	Likewise.

From-SVN: r139674