LUCID_G4_SD: cmake fixes

Don't build objects into more than one library. Instead, the component library should depend on the non-component library.

Closes LUCID_G4_SD-20200501

This merge request affects 1 package:

• ForwardDetectors/LUCID/LUCID_G4_SD

added ForwardDetectors Simulation master review-pending-level-1 labels

CI Result SUCCESS (hash c1896814)

	Athena	AthSimulation	AnalysisBase	AthGeneration
externals
cmake
make
required tests
optional tests

Full details available on this CI monitor view
Athena: number of compilation errors 0, warnings 0
AthSimulation: number of compilation errors 0, warnings 0
AnalysisBase: number of compilation errors 0, warnings 0
AthGeneration: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 13389]

merged

mentioned in commit 122d507a

added sweep:ignore label