GeoExporter+DumpGeo+GeoAdaptors: enable thread-checker and fix warnings

Enable thread-checker and fix warnings.

This merge request affects 3 packages:

• DetectorDescription/GeoModel/GeoAdaptors
• DetectorDescription/GeoModel/GeoModelStandalone/DumpGeo
• DetectorDescription/GeoModel/GeoModelStandalone/GeoExporter

Affected files list will not be printed in this case

Adding @stavrop ,@rbianchi ,@jojungge as watchers

added Geometry master review-pending-level-1 labels

CI Result SUCCESS (hash a5f526bb)

	Athena	AthSimulation	AthGeneration	AnalysisBase	AthAnalysis	DetCommon
externals
cmake
make
required tests
optional tests

Full details available on this CI monitor view. Check the JIRA CI status board for known problems
Athena: number of compilation errors 0, warnings 0
AthSimulation: number of compilation errors 0, warnings 0
AthGeneration: number of compilation errors 0, warnings 0
AnalysisBase: number of compilation errors 0, warnings 0
AthAnalysis: number of compilation errors 0, warnings 0
DetCommon: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 53457]

lgtm approving -- L1

added review-approved label and removed review-pending-level-1 label

merged

mentioned in commit 1f9bb61e

added sweep:ignore label