AthenaPoolCnvSvc: Have T_AthenaPoolCnv choose the proper converter type.

Let the base class of T_AthenaPoolCnv depend on the object type, so that we can automatically use the generic xAOD/aux store converters for such types.

This merge request affects 1 package:

• Database/AthenaPOOL/AthenaPoolCnvSvc

Adding @ssnyder ,@mnowak as watchers

added Database master review-pending-level-1 labels

CI Result SUCCESS

	Athena	AthSimulation
externals
cmake
make
required tests
optional tests

Full details available at NICOS MR-26524-2019-09-12-07-29
Athena: number of compilation errors 0, warnings 0
AthSimulation: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 3208]

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

merged

mentioned in commit 8f83131c

added sweep:ignore label