merged from upstream
reverting local change to match upstream
Fixed test PrimObjectTest#variableAtShouldCallResolveObject.
Merge pull request #169 from js-ojus/js-ojus

Fixed test PrimObjectTest#variableAtShouldCallResolveObject.
Adding 'subclass:' binary message selector to Class.
Merge pull request #170 from lhazlewood/767327316b4c0300a7ef711ef2d19b58f73d13af

Add 'subclass:' binary message selector to Class.
Added to git ignore some eclipse files.
Merge pull request #171 from jamesladd/master

Added eclipse files to git ignore.
Behavior>>inheritsFrom: works partially.

* added a test using two classes: a parent and a child
* fails when `isKindOf:' is tested against `Object'; needs further
  investigation
Modified Object>>~~ to conform to the Blue Book.
Merge pull request #173 from js-ojus/js-ojus

Behavior>>inheritsFrom: works partially.