relocate to boost/algorithm/sequence_alignment
added detail/mpl_utils.hpp
namespace boost::algorithm::sequence_alignment
factored code into edit_types.hpp and edit_alignment.hpp
move edit_alignment implementation details to detail
edit_distance and edit_alignment implementations moved to detail
clean up includes and typedefs for edit_distance.hpp
clean up mpl_utils.hpp includes and defs
Merge branch 'boost_reorg' to master