Cairngorm Code

[maven-release-plugin] prepare release cairngorm-frameworks-2.2.2

* maven i18n issues fixed : see http://groups.google.com/group/flex-mojos/browse_thread/thread/1edfc6e6e85f89fc
* making the flex4 sdk the default one.

same code for flex3 and Flex4 : simpler

updating to FB4

adding flex4 support through conditional compilation

preparing for next release

adding header check file

adding maven builds

small updates to keep the flex4 and flex3 build running:
still TODO: circular refrences in PopUp lib when flex3 compiling.

Popup lib: Added duration property to ZoomAndFadeBehavior, added null check to stage in KeepCenteredBehavior, added ZoomAndFadeBehavior using Spark effects, name changes: ZoomAndFadePopUpBehavior > ZoomAndFadeBehavior, KeepCenteredBehaviour > KeepCenteredBehavior, CenterPopUpBehavior > CenterBehavior, added more feature combinations to samples.