make BCM_RawDataProvider reentrant

Motivated by @ishapova's presentation at yesterday's Core Software meeting.

Reviewing the tools used by the BCM_RawDataProvider (BCM_RodDecoder, BCM_RawDataProviderTool) suggests they can be used from a reentrant algo: All const, only mutable atomic counters as private class members.

This merge request affects 1 package:

• InnerDetector/InDetEventCnv/BCM_RawDataByteStreamCnv

This merge request affects 2 files:

• InnerDetector/InDetEventCnv/BCM_RawDataByteStreamCnv/BCM_RawDataByteStreamCnv/BCM_RawDataProvider.h
• InnerDetector/InDetEventCnv/BCM_RawDataByteStreamCnv/src/BCM_RawDataProvider.cxx

Adding @goetz ,@sroe as watchers

added InnerDetector master review-pending-level-1 labels

FYI @janovak

CI Result SUCCESS (hash 16041992)

	Athena	AthSimulation	AthGeneration	AnalysisBase	AthAnalysis	DetCommon
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
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 30726]

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

merged

mentioned in commit 3e16c971

added sweep:ignore label