* cmt/requirements: Build an installed_library for the explicit template instantiation code

	* PhysicsElementLinks/TruthParticleLinks.h: )
	* PhysicsElementLinks/ElectronLinks.h:      )
	* PhysicsElementLinks/TauJetLinks.h:        ) Move explicit template instantiation code to corresponding
	* PhysicsElementLinks/MuonLinks.h:          ) .cxx file in order to solve a duplicate symbol problem on
	* PhysicsElementLinks/JetLinks.h:           ) MacOSX
	* PhysicsElementLinks/TrackLinks.h:         )
	* PhysicsElementLinks/PhotonLinks.h:        )
	* src/ElectronLinks.cxx:      )
	* src/JetLinks.cxx:           )
	* src/MuonLinks.cxx:          )  Explicit template instantiation code. Moving it from the .h files
	* src/PhotonLinks.cxx:        )  solves a duplicate symbol problem on MacOSX
	* src/TauJetLinks.cxx:        )
	* src/TrackLinks.cxx:         )
	* src/TruthParticleLinks.cxx: )
	* Tag PhysicsElementLinks-00-00-06 (PhysicsElementLinks-00-00-06)