forward_list.h (forward_list): Adjust comments.
* include/bits/forward_list.h (forward_list): Adjust comments.
(forward_list(const forward_list&, const _Alloc&)): Use
_M_range_initialize to copy elements.
(forward_list(forward_list&&, const _Alloc&)): Add exception
specification.
(_Fwd_list_base(const _Fwd_list_base&, const _Node_alloc_type&)):
Remove.
* include/bits/forward_list.tcc (_Fwd_list_base(const _Fwd_list_base&,
const _Node_alloc_type&)): Remove.
(_Fwd_list_base(_Fwd_list_base&&, const _Node_alloc_type&)): Fix
memory leak when allocators are not equal.
From-SVN: r193009