Restore "Obtained from string" source name. #857

Job	Run time
cpp-lib-build (macos-11, clang, ON)	3m 52s
cpp-lib-build (macos-11, clang, OFF)	3m 31s
cpp-lib-build (macos-11, gcc, ON)	2m 22s
cpp-lib-build (macos-11, gcc, OFF)	1m 48s
cpp-lib-build (ubuntu-20.04, clang, ON)	1m 35s
cpp-lib-build (ubuntu-20.04, clang, OFF)	1m 35s
cpp-lib-build (ubuntu-20.04, gcc, ON)	3m 6s
cpp-lib-build (ubuntu-20.04, gcc, OFF)	3m 12s
cpp-lib-build (windows-2022, clang, ON)	8m 0s
cpp-lib-build (windows-2022, clang, OFF)	10m 38s
cpp-lib-build (windows-2022, cl)	7m 45s
build (macos-11, tool)	2m 25s
build (macos-11, cpp)	38m 19s
build (macos-11, csharp)	11m 11s
build (macos-11, dart)	6m 26s
build (macos-11, go)	4m 58s
build (macos-11, java)	2m 20s
build (macos-11, javascript)	2m 46s
build (macos-11, typescript)	19m 51s
build (macos-11, php)	2m 49s
build (macos-11, python3)	2m 15s
build (ubuntu-20.04, tool)	1m 19s
build (ubuntu-20.04, cpp)	19m 27s
build (ubuntu-20.04, csharp)	11m 48s
build (ubuntu-20.04, dart)	6m 39s
build (ubuntu-20.04, go)	3m 43s
build (ubuntu-20.04, java)	1m 35s
build (ubuntu-20.04, javascript)	2m 22s
build (ubuntu-20.04, typescript)	21m 29s
build (ubuntu-20.04, php)	2m 10s
build (ubuntu-20.04, python3)	1m 52s
build (windows-2022, tool)	2m 0s
build (windows-2022, cpp)	34m 29s
build (windows-2022, csharp)	16m 10s
build (windows-2022, dart)	9m 38s
build (windows-2022, go)	9m 35s
build (windows-2022, java)	2m 47s
build (windows-2022, javascript)	3m 8s
build (windows-2022, typescript)	45m 52s
build (windows-2022, php)	3m 43s
build (windows-2022, python3)	2m 25s
	5h 42m 55s

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