If we tear through a few layers of abstraction, we can get at the inodes
contained in a directory without having to stat all the files. This
allows us to eliminate identical files much earlier in the changelist
generation process.
Signed-off-by: Burke Libbey <burke@libbey.me>
Upstream-commit: 45c45a2c9a71528489a58fe633849f16e245631c
Component: engine
