This fixes a performance regressions introduced by 178fb79b5cafe36c993bb1f9f9a63e8bac162c66.
Also makes properties in the directive wrapper private
so that closure compiler can minify them better.
- for now only wraps the `@Input` properties and calls
to `ngOnInit`, `ngDoCheck` and `ngOnChanges` of directives.
- also groups eval sources by NgModule.
Part of #11683