R-tree is dead ... long live GiST.

contrib/cube/cube.c

contrib/intarray/_int.h

contrib/ltree/_ltree_gist.c

contrib/ltree/ltree_gist.c

contrib/pg_trgm/trgm_gist.c

contrib/seg/seg.c

contrib/tsearch2/gistidx.c

contrib/tsearch2/query.c

contrib/tsearch2/rewrite.c

doc/src/sgml/backup.sgml

doc/src/sgml/geqo.sgml

doc/src/sgml/gist.sgml

doc/src/sgml/indices.sgml

doc/src/sgml/mvcc.sgml

doc/src/sgml/ref/create_index.sgml

doc/src/sgml/xindex.sgml

src/backend/access/Makefile

src/backend/access/gist/gistproc.c

src/backend/access/rtree/Makefile

src/backend/access/rtree/rtget.c