[geometry][index]: errors fixed in additional rtree utilities.

git-svn-id: http://svn.boost.org/svn/boost/trunk@84906 b8fc166d-592f-0410-95f2-cb63ce0dd405
[geometry][index]: removed non-c++03 header from statistics additional utility

git-svn-id: http://svn.boost.org/svn/boost/trunk@84907 b8fc166d-592f-0410-95f2-cb63ce0dd405