PR libstdc++/25482
	* include/bits/stl_algobase.h (__copy_aux(_CharT*, _CharT*,
	ostreambuf_iterator<_CharT>), __copy_aux(const _CharT*, const _CharT*,
	ostreambuf_iterator<_CharT>), __copy_aux(istreambuf_iterator<_CharT>,
	istreambuf_iterator<_CharT>, _CharT*), copy(istreambuf_iterator<_CharT>,
	istreambuf_iterator<_CharT>, ostreambuf_iterator<_CharT>)): Declare.
	* include/bits/stl_algo.h (find(istreambuf_iterator<_CharT>,
	istreambuf_iterator<_CharT>, _CharT)): Likewise.
	* include/bits/streambuf_iterator.h (copy(istreambuf_iterator<_CharT>,
	istreambuf_iterator<_CharT>, ostreambuf_iterator<_CharT>),
	__copy_aux(_CharT*, _CharT*, ostreambuf_iterator<_CharT>),
	__copy_aux(const _CharT*, const _CharT*, ostreambuf_iterator<_CharT>),
	__copy_aux(istreambuf_iterator<_CharT>, istreambuf_iterator<_CharT>,
	_CharT*), find(istreambuf_iterator<_CharT>, istreambuf_iterator<_CharT>,
	_CharT)): Define.
	(class istreambuf_iterator<>, class ostreambuf_iterator<>): Declare
	friends.
	* include/std/std_streambuf.h (class basic_streambuf<>): Likewise.
	* include/bits/cpp_type_traits.h (struct __is_char<>): Add.
	* testsuite/25_algorithms/copy/streambuf_iterators/char/1.cc: New.
	* testsuite/25_algorithms/copy/streambuf_iterators/char/2.cc: New.
	* testsuite/25_algorithms/copy/streambuf_iterators/char/3.cc: New.
	* testsuite/25_algorithms/copy/streambuf_iterators/char/4.cc: New.
	* testsuite/25_algorithms/copy/streambuf_iterators/wchar_t/1.cc: New.
	* testsuite/25_algorithms/copy/streambuf_iterators/wchar_t/2.cc: New.
	* testsuite/25_algorithms/copy/streambuf_iterators/wchar_t/3.cc: New.
	* testsuite/25_algorithms/copy/streambuf_iterators/wchar_t/4.cc: New.
	* testsuite/25_algorithms/find/istreambuf_iterators/char/1.cc: New.
	* testsuite/25_algorithms/find/istreambuf_iterators/char/2.cc: New.
	* testsuite/25_algorithms/find/istreambuf_iterators/wchar_t/1.cc: New.
	* testsuite/25_algorithms/find/istreambuf_iterators/wchar_t/2.cc: New.
	* testsuite/performance/25_algorithms/copy_streambuf_iterators.cc: New.
	* testsuite/performance/25_algorithms/find_istreambuf_iterators.cc: New.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@112247 138bc75d-0d04-0410-961f-82ee72b054a4