Minor refactoring.
Kiss. Abandon oasis.
Squashed 'termbox/' content from commit b4e2dc1

git-subtree-dir: termbox
git-subtree-split: b4e2dc12d8ab337227d0bf314e00d0ee8dd2847b
Merge commit 'a83b7ff5a711dd368c2ffff16b7c4c4e189b3a12' as 'termbox'
Use scrypt Makefile.