[PATCH] Move TASK_XACCT, TASK_IO_ACCOUNTING up in menus

Since they depends on TASKSTATS, it would be nice to move them closer to
another options depending on TASKSTATS.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>