[AUDIO-BRINGUP]
- Partly implement IKsProcessingObject interface, which will be used to handle ks filter-centric based filters
- Fix broken check, which failed to construct filters, which dont have a FILTER_DISPATCH associated
- Add check which fails create requests, when the filter doesnot allow user mode access (i.e. echo cancelation filter)
- register ks worker to dispatch processing requests to the IKsProcessingObject
- Implement KsFilterAttemptProcessing, KsFilterGetAndGate
svn path=/branches/audio-bringup/; revision=50097