Change CSCTFTrackerProducer to inherit from edm::one::Producer because it accesses many non-const static vars that cannot be made const.
change DTTrackFinder to a edm::one::producer because it accesses many non-const static variables.
make L1MuGlobalMuonTrigger a edm::one::producer because it access many non-const static vars.
Merge pull request #2132 from gartung/L1Trigger-make-edm-one-producer

Multithreading fixes -- L1 trigger make edm one producer
Merge remote branch 'origin/CMSSW_7_1_X' into CMSSW_7_0_X