This reverts commit 087f393c.

XCOMMONS-447: DefaultFilterDescriptorManager#createFilterProxy should return the passed fiter if it already support the required events

* add generic event exception

* missing header

This reverts commit a2b68486.

Revert until tests are fixed.

This reverts commit ce995891.

* avoid various issues by not serializing components in arrays

* introduce filter proxy helper for parsers
* introduce standard unknown events
* add various helpers for StAX (probably more to come)

XCOMMONS-441: Environment's getResource should return null if resource not found instead of Exception

* use the right class

* better support of SNAPSHOT version

* Moved to commons

* exclude asm to avoid conclict with other modules (we don't need it anyway)

* fix mistake in previous commit