geometry.index: docs - updated rtree times and linear picture, test - cosmetic change in experimental query iterator test, example - added experimental query iterator to the benchmark

git-svn-id: http://svn.boost.org/svn/boost/trunk@83944 b8fc166d-592f-0410-95f2-cb63ce0dd405
geometry.index rtree: error fixed in linear redistribute_elements, errors fixed in experimental spatial query iterator and visitor.

git-svn-id: http://svn.boost.org/svn/boost/trunk@83945 b8fc166d-592f-0410-95f2-cb63ce0dd405