Ninja doesn't like dependencies on directories.

Also ensure target directory cleanup before copying the i18n data file
there.

Test: art/tools/buildbot-build.sh --host
Test: art/test/testrunner/run_build_test_target.py art-test
Bug: 157734636
Bug: 129332183
Change-Id: I6d9ac8f353e1c78ac6247bd75d7c7598d57fb56d
2 files changed