infra: Upgrade Class.js (according to WinJS).
infra/json: Implement more of JR353.
test/infra/types: Test fixed-width integers.
binary/pe: Make DataDirectoryLocations public. Simplify access to
section name.
assembly/ia32_x64/control: Say "control flow graph" instead of "graph".
assembly/ia32_x64/control: Make BasicBlock iterable.
assembly/ia32_x64/control: Introduce CallGraphExplorer.