plug/ contains the dynamically loaded library,
and of course, src/ has the core program.

You'll have to use LD_LIBRARY_PATH='.' ./plugin
This could be remedied with a little messing with
get/setenv.

There's a good reason for the fragmentation and
recursion of the Makefiles, as how the files are
compiled vary at compliation and link time
(link-time not so applicable in this case, but
 it is effected by CFLAGS anyways).

Copy as you wish, credit not.