Minor javadoc improvements and fixes for @Deprecated methods.
Added toString implementation for all ILists implementations.
Renamed PriorityAggregatorQueue to PriorityBlockingAggregatorQueue and moved it to the proper package. Added clear() and clear(int), clearAndPut(int, T) and clearAndOffer(int, T) methods.
Added method SystemUtils.getTargetSDKVersion.
Added AsyncTaskUtils.
Made ActivityUtils use AsyncTaskUtils.executeParallel.
Fixed wrong version in AsyncTaskUtils.executeParallel.
Minor changes.