hashtable_policy.h: Fix some long lines.

hashtable_policy.h: Fix some long lines.

2014-01-15  François Dumont  <fdumont@gcc.gnu.org>

	* include/bits/hashtable_policy.h: Fix some long lines.
	* include/bits/hashtable.h (__hash_code_base_access): Define and
	use it to check its _M_bucket_index noexcept qualification. Use
	also in place of...
	(__access_protected_ctor): ...this.
	* testsuite/23_containers/unordered_set/instantiation_neg.cc:
	Adapt line number.
	* testsuite/23_containers/unordered_set/
	not_default_constructible_hash_neg.cc: Likewise.

From-SVN: r206632