Cairngorm Code

* Adding a new view loader called 'ModuleViewLoader' specifically written as a custom Spark component.
It provide a separate skin based on 4 states (normal,loading,error,loaded). The Default skin is ModuleViewLoaderSkin

the ModuleViewLoader component benefits from new features such as external Loading Policy strategies.
The lib provides 2 Load Policy:
- BasicLoadPolicy: load module on addedToStage and unload on removeFromStage
- LazyModuleLoadPolicy: load module on demand based on the moduleId property of the message. As soon as a message with a corresponding moduleId is dispatched, the module is loading itself automatically.

* Refactoring the SDK3 ViewLoader to reflect the same features as the new Spark ViewModuleLoader except that the SDK3 ViewLoader do not include states to display different views as the Spark component does.

* Refactoring the ModuleTest sample project to use the new features/components

Migrating Cairngorm Libs to Flex 4. From now, the trunk will contains Cairngorm libs and samples targeting Flex SDK 4.0 however the maven build will continue to support Cairngorm libs targeting SDK 3.5. so both SDK 3.5 and SDK 4.0 artifacts are going to be available.

-Change initialization objects of Cairngorm Parsley extensions to Parsley convention (i.e. CairngormModuleLib>CairngormModuleSupport). Every initialization object has a static initialize method and implements Parsley's ContextBuilderProcessor, which allows it to be specified within a ContextBuilder definition.
-API Change in Navigation library: Changed -FirstEnter metadata to Enter(time="first"), -Enter metadata to Enter(time="next") and -EveryEnter metadata to Enter(time="every")
-Added convenience isValid get accessor to ValidationGroupEvent

Updating IntegrationTest Project to support the new PopUp Behaviors
Updating the project properties with the latest classes path

headers update and new main root build

-Added experimental version (not working yet) of module runtime support (allows the description of modules and interceptors in XML loaded at runtime)
-Temporarily switching to Parsley snapshot version 2.2.2

Improving the inter-communication module messages by adding new behaviors:
- Ability to dispatch a message to a unique module instance thru the [ModuleId] tag defined in the message.
- Ability to dispatch a message to all modules of a same type (defined by a ParsleyModuleDescriptor) by providing the reference of the Descriptor in the ModuleMessageInterceptor decorator.
- Ability to dispatch a message to all instantiated modules if none of the above is defined.

Updated the ModuleTest samples to use these new behaviors.

Simplifying the design of the module lib by:
- Refactoring the existing mechanism to support the inter-communication between modules thru a unique identifier.
- Ability to communicate between multiple instances of the same module.
- Removed the LazyLoader which was a temporary workaround.
- Adding a new Metadata [ModuleId] which must be used within messages that are inter-communication API messages (to communicate between modules).
- Adding a message pool which basically keep all messages that need to be redirected to a module which is not yet instantiated until the module is available and ready to accept the messages.
- Redo from scratch the ModuleTest application to show the new behaviors.
- Refactored the InSync sample to use the new Module lib.

Downgraded to Flex SDK 3.3

partially migrating the build to parlsey 2.1.0
fixing a few other details here and there