2009-12-11  Paolo Carlini  <paolo.carlini@oracle.com>

	PR libstdc++/22634, DR 539 [Ready]
	* include/bits/stl_numeric.h (adjacent_difference): Use std::move
	at the end of the loop body, per the Ready resolution.
	* include/std/numeric: Do not include unnecessarily <cstddef>.
	* doc/xml/manual/intro.xml: Add an entry for DR 539.

From-SVN: r155173