src/DigitizationAlg.cxx, src/PileUpToolsAlg.cxx, TestPileUpTool.cxx - use auto& rather than auto in for loops to avoid unnecessary copies. Tagging PileUpComps-00-16-02 (PileUpComps-00-16-02)

	* Tagging PileUpComps-00-16-02
	* src/DigitizationAlg.cxx, src/PileUpToolsAlg.cxx,
	TestPileUpTool.cxx - use auto& rather than auto in for loops to
	avoid unnecessary copies.

2016-08-15  scott snyder  <snyder@bnl.gov>

	* Tagging PileUpComps-00-16-01.
	* Fix clang warnings: missing override keywords.

2016-07-13  John Chapman  <John.Chapman@cern.ch>

	* Tagging PileUpComps-00-16-00
	* src/PileUpEventLoopMgr.cxx (nextEvent): allow for hard-scatter
	EventType to have multiple mc_event_weights. ATLASSIM-2504,
	ATLASSIM-2989. Merging in changes from PileUpComps-00-12-12-02.

2016-07-05  John Chapman  <John.Chapman@cern.ch>

...
(Long ChangeLog diff - truncated)


Former-commit-id: ae8aa4bd