re PR libstdc++/41773 (Many libstdc++ failures)

2009-10-20  Paolo Carlini  <paolo.carlini@oracle.com>

	PR libstdc++/41773
	Revert:
	2009-10-20  Paolo Carlini  <paolo.carlini@oracle.com>

	* include/bits/basic_string.h (_S_construct(const _CharT*, size_type,
	const _Alloc&)): New, declare.
	(_S_construct(_CharT*, _CharT*, const _Alloc&),
	_S_construct(const _CharT*, const _CharT*, const _Alloc&),
	_S_construct(iterator, iterator, const _Alloc&),
	_S_construct(const_iterator, const_iterator, const _Alloc&)): New,
	forward to the latter.
	* include/bits/basic_string.tcc (_S_construct(const _CharT*,
	size_type, const _Alloc&)): Define.
	(basic_string(const basic_string&, size_type, size_type),
	basic_string(const basic_string&, size_type, size_type,
	const _Alloc&), basic_string(const _CharT*, size_type,
	const _Alloc&), basic_string(const _CharT*, const _Alloc&),
	basic_string(initializer_list<>, const _Alloc&)): Call the latter.
	* config/abi/pre/gnu.ver: Remove recently added exports.
	* src/string-inst.cc: Remove instantiations.

From-SVN: r153040