Merge branch 'cherry-pick-1bf2c9c2 [formerly 0725be3a89]-21.0-mc16d' into '21.0-mc16d'

Sweeping !8720 from 21.0 to 21.0-mc16d.
Adding scandir python module to AtlasPyFwdBwdPorts

See merge request atlas/athena!8861

Former-commit-id: bb6f2dea3156b76632074d46df65470daafef623

External/AtlasPyFwdBwdPorts/CMakeLists.txt

@@ -213,6 +213,12 @@ _setup_python_package( simplejson
    2f8351f6e6fe7ef25744805dfa56c0d5
    DEPENDS distribute )
 
+# Install scandir:
+_setup_python_package( scandir
+   ${CMAKE_CURRENT_SOURCE_DIR}/src/scandir-1.6.tar.gz
+   0180ddb97c96cbb2d4f25d2ae11c64ac
+   )
+
 # Clean up:
 unset( _setup_python_package )