Merge branch 'travis-osx-032' into travis-osx-033

Replace 033 .travis.yml with 032 .travis.yml.
Subsequent commits will restore 033 functionality.

src/rust/tor_util/include.am is deleted in 033.
Subsequent commits will apply 032 changes to
src/rust/tor_rust/include.am.

Replace 033 src/test/test_rust.sh with 032
src/test/test_rust.sh, which was backported from
master.