added include/myth.h that signals an error when included (user should now include myth/myth.h)
added include/myth.h that signals an error when included (user should now include myth/myth.h)

massivethreads/massivethreads,massivethreads/massivethreads,massivethreads/massivethreads,massivethreads/massivethreads,massivethreads/massivethreads