New internal variable names in prologues.
smalltalk -> $vm
globals -> $globals
smalltalk -> $vm, forgotten pieces
$vm -> $core
_st -> $recv
boot.js: vm -> api
Final recompile. Fixes #831.
Merge branch 'master' into gh-831
require('amber/helpers') .vm -> .api

plus use boot.js's .api, not .vm
API-CHANGES.txt updates w/ namechanges
Merge pull request #1089 from amber-smalltalk/gh-831

New names of internal variables.
jQuery used in nonminified version

now that deploy minifies it anyway,
nonminified during devel may ease debugging
config.js regenerated
'grunt devel' aliases 'grunt amdconfig'

to be able to routinely run 'grunt devel'
to refresh codfiguration in project as well as in Amber
ChANGELOG: Helios extraction mentioned