Update to latest Rust.
Merge pull request #8 from metajack/rust-up

Update to latest Rust.
Fix link flags so relative paths are not propagated.
Merge pull request #9 from metajack/link-flags

Fix link flags so relative paths are not propagated.
Update to latest Rust
Merge pull request #10 from kmcallister/rust-upgrade

Update to latest Rust
More Rust version updates
Merge pull request #11 from kmcallister/rust-upgrade

More Rust version updates
Update tests for new Rust
Merge pull request #12 from kmcallister/rust-upgrade

Update tests for new Rust
Warning police.
Merge pull request #13 from metajack/rustup-warn

Warning police.
Switch from -o to --out-dir.
Revert to using -o for tests
Merge pull request #14 from kmcallister/otest

Revert to using -o for tests
Update for language changes