Track trigger np 20140228

this pull request is meant for the latest changes:


 Feb 24, 2014
pozzobon	pozzobon	a bit of optimization in MC truth association for Track Trigger	b48a9ab
pozzobon	pozzobon	a bit of optimization in MC truth association for Track Trigger	c03b6b9
 Feb 25, 2014
pozzobon	pozzobon	commenting StubRejected stuff to avoid memory kaboom at hi PU	8cbe2a6
pozzobon	pozzobon	additional performance fix of TTClusterAssociator	88e85b0
 Feb 28, 2014
pozzobon	pozzobon	additional performance fix of TTClusterAssociator	137221a



for the previous ones, please contact Anders.

Nicola