Work on reg blocking.
Merge branch 'master' of https://github.com/iskandr/parakeet

Conflicts:
	config.py
	syntax.py
Merge branch 'master' of https://github.com/iskandr/parakeet
Working toward reg tiling.
Merge branch 'master' of https://github.com/iskandr/parakeet

Conflicts:
	config.py
Reg tiling works.