Added code to expose the persistence_diagram class, the bottleneck_distance function and the point class to python. Most of the commonly used methods for each class have been exported. The constructor for point now requires that a data argument be provided along with x and y coord. This needs to be made optional. The constructor for persistence_diagram could possibly be rewritten as well.

set							(targets						
							 test-set-iterators
							 test-consistencylist
							 test-orderlist)

if                          (counters)
    set                     (targets    ${targets} test-counters)
endif                       (counters)

foreach 					(t ${targets})
	add_executable			(${t} ${t}.cpp)
	target_link_libraries	(${t} ${libraries})
endforeach 					(t ${targets})