update cargo
remove old cargos
remove old rust, add new rust
cargo: proper CC/CFLAGS handling with HOST_* patch
new cargo, drop patch
disable cargo assume
Merge branch 'master' of vcr:cody/meta-rust
new cargo, rust tweaks, etc
attempting to use a new cargo
cargo patch
cargo: more env vars for gcc-rs
add workaround for NULL __dso_handle