[Grace-core] Test Cases

[Jameson McCowan]

While working on making a GUnit test suite it was found that at least 9 of the test cases for minigrace error on standard visibility settings in the javascript backend. These are valid errors, and as such the test cases should probably be updated to be in line with the new standard visibility rules.

Errors:
    test_014_objectvar: Requested confidential method 'v' on Object from outside.
    test_015_objectdef: Requested confidential method 'c' on Object from outside.    test_017_objectvarassign: Requested confidential method 'val' on Object from outside.
    test_030_operatoroverload: Requested confidential method 'value' on Object from outside.
    test_098_defobjouter: Requested confidential method 'inner' on Object from outside.
    test_118_matchcasesimple: Requested confidential method 'left' on Object from outside.
    test_119_matchcasedestructuring: Requested confidential method 'extract' on Object from outside.
    test_129_anontype: Requested confidential method 'bar' on Object from outside.
    test_131_anonintersection: Requested confidential method 'bar' on Object from outside.

Jameson