Merge branch 'ds/name-hash-tweaks'

"git pack-objects" and its wrapper "git repack" learned an option to use an alternative path-hash function to improve delta-base selection to produce a packfile with deeper history than window size. * ds/name-hash-tweaks: pack-objects: prevent name hash version change test-tool: add helper for name-hash values p5313: add size comparison test pack-objects: add GIT_TEST_NAME_HASH_VERSION repack: add --name-hash-version option pack-objects: add --name-hash-version option pack-objects: create new name-hash function version