MuonCablingTools+RPC_CondCabling: remove MsgStream from BaseObject

This finalizes the removal of the MsgStream instances in the muon cabling BaseObject class. Previously, derived classes were able to use the DISP macros for messaging. All those uses have been replaced by other means of messaging (see !45581 (merged), !45582 (merged), !45597 (merged)). As we have O(1M) instances of these classes, this significantly reduces the size and time needed to initialize them.

Closes ATLASRECTS-6313.

Also remove ancient gcc 2.x compatibility code and the obsolete __osstream typedef.

cc @jojungge

This merge request affects 5 packages:

• MuonSpectrometer/MuonCablings/MuonCablingTools
• MuonSpectrometer/MuonConditions/MuonCondCabling/RPC_CondCabling
• Trigger/TrigT1/TrigT1RPChardware
• Trigger/TrigT1/TrigT1RPClogic
• Trigger/TrigT1/TrigT1RPCsteering

Affected files list will not be printed in this case

Adding @rosati ,@wleight ,@afaulkne ,@jojungge as watchers

added JetEtmiss MuonSpectrometer Trigger master review-pending-level-1 labels

CI Result SUCCESS (hash 8a9f48ad)

	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 37641]

CI passed. Looks good. Approved

Sergei L1

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

merged

mentioned in commit c105269a

added sweep:ignore label

mentioned in merge request !44463 (merged)