Prepare for module.link(id, setters) replacing module.watch.
Prepare for module.link(id, setters) replacing module.watch.

Thanks to these commits in the Reify project, there's a new runtime module
system method: module.link(id, setters), which replaces the previous (more
cumbersome) module.watch(require(id), setters).

This is more than a cosmetic change, since it will allow creating module
Entry objects before evaluating modules, which will help improve spec
compliance around import cycles and hoisted function declarations.

It's also shorter than the module.watch style, which is always nice.

However, since require(id) no longer appears in the generated code, we
can't just rely on findImportedModuleIdentifiers looking for require
function calls, so the scanner now needs to look for module.link(id, ...)
calls as well.

Hansoft/meteor,Hansoft/meteor,Hansoft/meteor,Hansoft/meteor,Hansoft/meteor,Hansoft/meteor,Hansoft/meteor