Merged requested to merge sponce_fixDQFilter into master
- Moved DQFilter to upgrade framework.
- Dropped usage of EventCountAlg in dqfilter tests.
- Simplified drastically EventCountAlg that is now only a test algo for the XMLSummarySvc test. Should be dropped when XMLSummarySvc is replaced.
- finally added a new counter to DQFilterSvc to check its efficiency.