Factored the load order logic into its own file, as it was easier to work with that way. We could definitely tweak the structure.
Also tried hoisting constants out to top level, but it's not quite ready yet, so splitting that work out into a separate CL.
(also fixes#152 about cleaning up lazyClass, and fixes#181 about static fields)
R=vsm@google.com
Review URL: https://codereview.chromium.org/1133593004
Leaf Petersen