Fixes in nn-destroy helper functions.
Merge branch 'master' of
ssh://git@github.com/texastony/grid-predator-prey.git into Tony

Conflicts:
	src/ga-neural-networks.ss
Merge branch 'master' of ssh://git@github.com/texastony/grid-predator-prey.git into Tony
Changed GA to a population of 100 DNAs.
Merge branch 'master' of ssh://git@github.com/texastony/grid-predator-prey.git into Tony
Merge pull request #10 from texastony/Tony

Tony