.js files wrapped into closure, smalltalk,nil,_st are local
Committing in closure format.
Merge branch 'using-st-inside-st' into less-globals
boot.js: globals localized in boot.js
boot.js: globals never used directly

They are renamed and everything works.
boot.js: commit uses renamed globals
amberc works with deglobalized packages, npm test works
boot.js: adding explanation to global_-named variables
boot.js: simpler (less IIFE-wrapped) code
Merge pull request #537 from herby/less-globals

Less globals