* Repackage the source, filter vendored crates and allow building with
packaged crates.
* d/vendor: Add concread 0.2.21 and uuid 0.8.
* allow-newer-crates.diff, control: Add a bunch of rust crates to
build-deps, and patch toml files to allow newer crates.
* concread: Mark tcache as non-default, fix checksums and ease a dep.
* Update copyright for vendored bits.