geometry.index: examples moved from example/index to example_index

git-svn-id: http://svn.boost.org/svn/boost/trunk@83990 b8fc166d-592f-0410-95f2-cb63ce0dd405
geometry.index: tests moved from test/index to test_index

git-svn-id: http://svn.boost.org/svn/boost/trunk@83991 b8fc166d-592f-0410-95f2-cb63ce0dd405
Modified trunk regression tests Jamfile to respect the change of geometry.index tests directory.

git-svn-id: http://svn.boost.org/svn/boost/trunk@83992 b8fc166d-592f-0410-95f2-cb63ce0dd405