updating madrona version (branch) for postgis 2
updating madrona version (branch) for postgis 2

clean_geometry was changed to st_makevalid and simplify was changed to
st_simplify

Ecotrust/PEW-EFH,Ecotrust/PEW-EFH,Ecotrust/PEW-EFH,Ecotrust/PEW-EFH,Ecotrust/PEW-EFH,Ecotrust/PEW-EFH