2009-11-03  David Krauss  <potswa@mac.com>
	    Paolo Carlini  <paolo.carlini@oracle.com>

	PR libstdc++/41351
	* include/bits/stl_algo.h (__rotate(_RandomAccessIterator,
	_RandomAccessIterator, _RandomAccessIterator,
	random_access_iterator_tag)): Rewrite to use only std::swap in
	general and std::copy/std::copy_backward when safe.

Co-Authored-By: Paolo Carlini <paolo.carlini@oracle.com>

From-SVN: r153860