linux

Add support for reading several rntuple files #2445

Job	Run time
build-and-test (dev3/x86_64-el9-clang16-opt)	16m 41s
build-and-test (dev3/x86_64-el9-clang16-opt)	16m 41s
build-and-test (dev4/x86_64-el9-clang16-opt)	18m 46s
build-and-test (dev4/x86_64-el9-clang16-opt)	18m 46s
build-and-test (dev4/x86_64-el9-gcc13-opt)	9m 31s
build-and-test (dev4/x86_64-el9-gcc13-opt)	29m 9s
build-and-test (LCG_105/x86_64-el9-clang16-opt)	17m 5s
build-and-test (LCG_105/x86_64-el9-clang16-opt)	17m 5s
build-and-test (LCG_105/x86_64-el9-gcc13-opt)	17m 29s
build-and-test (LCG_105/x86_64-el9-gcc13-opt)	17m 29s
	2h 58m 42s

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