2011-02-09  Jonathan Wakely  <jwakely.gcc@gmail.com>

	* include/std/future (packaged_task::operator bool): Rename to...
	(packaged_task::valid): ...this.
	* testsuite/30_threads/packaged_task/cons/1.cc: Adjust.
	* testsuite/30_threads/packaged_task/cons/2.cc: Adjust.
	* testsuite/30_threads/packaged_task/cons/move.cc: Adjust.
	* testsuite/30_threads/packaged_task/cons/move_assign.cc: Adjust.
	* testsuite/30_threads/packaged_task/cons/alloc.cc: Adjust.
	* testsuite/30_threads/packaged_task/members/invoke.cc: Adjust.
	* testsuite/30_threads/packaged_task/members/reset.cc: Adjust.
	* testsuite/30_threads/packaged_task/members/reset2.cc: Adjust.
	* testsuite/30_threads/packaged_task/members/swap.cc: Adjust.
	* testsuite/30_threads/packaged_task/members/boolconv.cc: Remove.
	* testsuite/30_threads/packaged_task/members/valid.cc: Add.

From-SVN: r169988