Track trigger np 20131202 dsv

The fork involves 6 packages

Geometry/TrackerGeometryBuilder (*)
DataFormats/L1TrackTrigger (*)
L1Trigger/TrackTrigger (*)
L1Trigger/TrackFindingTracklet
L1Trigger/TrackFindingAM
SimTracker/TrackTriggerAssociation (*)

BUT my pull request is meant ONLY for the following ones:

Geometry/TrackerGeometryBuilder
DataFormats/L1TrackTrigger
L1Trigger/TrackTrigger
SimTracker/TrackTriggerAssociation

as the other two are only test packages...

Thank you!
Nicola