Lite Collections for ActionScript Fx Code

[DOC] Examples and doc updated

[DOC] Iterator example added

[DOC] Examples refurbished

[SVN] Tagged current version with "preview2"

[SVN] Created tag folder

[BUG] Typing error in CollectionUtils fixed.

[DOC] BasicExample updated to the changes of the release preview2

[DOC] Added examples

[DEV] Added Lite Collections Fx

[DEV] Updated iterator behaviour
+ hasPrevious, getPrevious
- getCursor

[Internal] Improved performance of linked collections by adding explicit methods to add or remove nodes at start/end.

[Internal] Made certain properties visible for subclasses.