uninstaller.jar does not have the configured merge contents in <jar>

UninstallDataWriter is responsible to pull data out of UninstallData and write 'additionalData' into the uninstaller.jar. However, there is no logical place where I can see where to fill UninstallData with the contents of installer's resource/customData

Unless there is better solution, I may need to load resources/customData into UninstallData inside UninstallDataWriter ( a bit of hacky )

Running into this from a different angle - namely uninstaller listeners not being written to the uninstaller jar.

In izpack 4.3.x, uninstaller listeners are written out by Unpacker using UnpackerBase.handleAdditionalUninstallData(UninstallData udata, List[] customData)
This is no longer available in 5.x ( as of revision ce0b55aea271fe284a7271561e82e1a85effb111 ), and its not clear to me where it should now go:

• AutomatedInstallDataProvider has loadCustomData(...) commented out
• Unpacker.run() has handleAdditionalUninstallData(...) commented out
• CustomDataContainer is incomplete

Looks like it was being refactored but fell by the wayside.

Custom data (installer listeners, uninstaller listeners, uninstaller jars and uninstaller native libs) are now read in by EventFiller and appropriate classes populated.

UninstallDataWriter has been updated to write the uninstaller listeners, jars and native libs to the uninstaller jar. Some packages required for events and Windows uninstallation are also now merged to the uninstaller.

Added 2 new integration tests:

• com.izforge.izpack.integration.InstallerListenerTest - verifies installer listeners are invoked by the installer
• com.izforge.izpack.integration.UninstallerListenerTest - verifies uninstaller listeners are invoked by Destroyer

Updated integration tests:

• UninstallDataWriterTest
• EventTest