boot.js: ensureJsSelector in add/remove method
boot.js: methodDict, faster dnu.get
boot.js: Treat 'arguments' as keyword. Fix #1114.
boot.js: appeasing jshint, formatting
boot.js: prepare for faster propagateMethodChange
boot.js: method-local change propagation. Fix #631.
Cleaning uses and accessibility of init/initClass.
Merge pull request #1112 from amber-smalltalk/gh-631

Method change propagation only takes care of changed method
bootjs: faster, simpler "flat" copySuperclass
bootjs: extracting PackagesBrik
DNU test for yet uncovered DNU processing path
Object >> {asJQuery,asJQueryInContext:}. Fix #1118.
BlockClosure >> {asJQuery,asJQueryInContext:}. Fix #1119.

Wraps a function using one-element array.
Removing hard spaces (\xa0).
Removing trailing space in compiler.