GDS-1154
GDS-1145 Move Unsafe to generic collection package
Add ChangeListener support to persistent collections
GDS-1155 Remove BeanManager/replace by DataManager
Rename Platform to Application
Cleanup configuration and simplify context setup
GDS-1153
GDS-1156
Minor improvement in WeakIdentityHashMap: add size argument to constructor
GDS-1157
Add tracking option to PersistenceManager
GDS-1155
GDS-1153