Mostly evaluation of tiling.
Merge branch 'master' of https://github.com/iskandr/parakeet

Conflicts:
	config.py
Paper stuff.
Merge branch 'master' of https://github.com/iskandr/parakeet

Conflicts:
	adverb_api.py
	config.py
	loop_unrolling.py
	test_gaussian_blur.py