Now SystemNavigation is environment aware.

There two test classes :�

-�SystemNavigationTest has been modified to�test SystemNavigation on Smalltalk globals

� - SystemNavigationOnNewlyCreatedEnvironmentTest tests SystemNavigation on�a new Environment

�� � � � � � � have look at�SystemNavigationOnNewlyCreatedEnvironmentTest>>testEnsureDefaultEnvironmentNotUsed

ClassFactoryWithOrganizationForTestCase has been added to easily create classes

ClassFactoryWithOrganizationForTestCaseTest test this latter class.

Merge well in 12218 and tests are green.